Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized for You

we will pick new questions that match your level based on your Timer History

Track Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

It appears that you are browsing the GMAT Club forum unregistered!

Signing up is free, quick, and confidential.
Join other 500,000 members and get the full benefits of GMAT Club

Registration gives you:

Tests

Take 11 tests and quizzes from GMAT Club and leading GMAT prep companies such as Manhattan GMAT,
Knewton, and others. All are free for GMAT Club members.

Applicant Stats

View detailed applicant stats such as GPA, GMAT score, work experience, location, application
status, and more

Books/Downloads

Download thousands of study notes,
question collections, GMAT Club’s
Grammar and Math books.
All are free!

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

On average, the bottle-nosed dolphin comes up for air once [#permalink]

Show Tags

24 Oct 2009, 20:55

1

This post received KUDOS

6

This post was BOOKMARKED

00:00

A

B

C

D

E

Difficulty:

55% (hard)

Question Stats:

60% (02:28) correct
40% (01:15) wrong based on 576 sessions

HideShow timer Statistics

On average, the bottle-nosed dolphin comes up for air once every two minutes; the beluga whale, a close relative, comes up for air on average once every five minutes. The number of times a bottle-nosed dolphin would come up for air in a 24 hour period is approximately what percent greater than the number of times a beluga whale would come up for air in that same period?

A. 50% B. 100% C. 150% D. 200% E. 250%

One question I have is how to interpret a statement like the following: "X's height is 110% greater than that of Y." Does that mean X = 1.10*Y or X = 2.10*Y?

On average, the bottle-nosed dolphin comes up for air once [#permalink]

Show Tags

24 Oct 2009, 21:07

8

This post received KUDOS

Expert's post

2

This post was BOOKMARKED

On average, the bottle-nosed dolphin comes up for air once every two minutes; the beluga whale, a close relative, comes up for air on average once every five minutes. The number of times a bottle-nosed dolphin would come up for air in a 24 hour period is approximately what percent greater than the number of times a beluga whale would come up for air in that same period?

A. 50% B. 100% C. 150% D. 200% E. 250%

Dolphin once in 2 min; Beluga once in 5 min; So, dolphin comes up 2.5 times frequently than beluga, which is 150% (5-2)/2*100.

Answer: C.

"X's height is 110% greater than that of Y." Means: x=(1+110%)*y=(1+1.1)*y=2.1*y _________________

Re: Percentage Problem, Word Translation Issue [#permalink]

Show Tags

25 Oct 2009, 02:10

Thanks guys. The OA is indeed C.

Thanks for the word translation help Bunuel. I just wanted to make sure I am interpreting wording correctly (I keep confusing myself unfortunately!). _________________

On average, the bottle-nosed dolphin comes up for air once every two minutes; the beluga whale, a close relative, comes up for air on average once every five minutes. The number of times a bottle-nosed dolphin would come up for air in a 24 hour period is approximately what percent greater than the number of times a beluga whale would come up for air in that same period?

1.50% 2.100% 3.150% 4.200% 5. 250%

I got 250%. But that's incorrect. The correct answer is c [150%]. Can someone help please? _________________

On average, the bottle-nosed dolphin comes up for air once every two minutes; the beluga whale, a close relative, comes up for air on average once every five minutes. The number of times a bottle-nosed dolphin would come up for air in a 24 hour period is approximately what percent greater than the number of times a beluga whale would come up for air in that same period?

1.50% 2.100% 3.150% 4.200% 5. 250%

I got 250%. But that's incorrect. The correct answer is c [150%]. Can someone help please?

Key wording is percent greater. 5/2 = 2.5 = 250%, but the dolphin obviously comes up 100% of itself, thus we have to subtract the 100%.

Consider this. I scored 500 on my gmat, you scored 600. What percent greater did you score? Answer is 20%, however if I said "your score is what percent of my score?" the answer would be 120%.

On average, the bottle-nosed dolphin comes up for air once [#permalink]

Show Tags

17 Apr 2012, 10:04

On average, the bottle-nosed dolphin comes up for air once every two minutes; the beluga whale, a close relative, comes up for air on average once every five minutes. The number of times a bottle-nosed dolphin would come up for air in a 24 hour period is approximately what percent greater than the number of times a beluga whale would come up for air in that same period?

A) 50% B) 100% C) 150% D) 200% E) 250%

This question asks for the percentage change, but I don't see what forumulation asks that in the question? I don't see which words indicate that not the percentage of bottle-nosen dolphins to beluga whales is looked for. Could anybody help me with the formulation in these kinds of problems, I sometimes get these problems wrong because I misunderstand what's looked for in the question.

Re: On average, the bottle-nosed dolphin comes up for air once [#permalink]

Show Tags

17 Apr 2012, 12:04

1

This post was BOOKMARKED

BN1989 wrote:

On average, the bottle-nosed dolphin comes up for air once every two minutes; the beluga whale, a close relative, comes up for air on average once every five minutes. The number of times a bottle-nosed dolphin would come up for air in a 24 hour period is approximately what percent greater than the number of times a beluga whale would come up for air in that same period?

A) 50% B) 100% C) 150% D) 200% E) 250%

This question asks for the percentage change, but I don't see what forumulation asks that in the question? I don't see which words indicate that not the percentage of bottle-nosen dolphins to beluga whales is looked for. Could anybody help me with the formulation in these kinds of problems, I sometimes get these problems wrong because I misunderstand what's looked for in the question.

These percentage questions confused me too at a point, but the formula is pretty simple: x = y(1+P) where x is your first item (number of times dolphin comes up), y is your second item (number of times whale comes up), and p is your percentage chain.

If I ever forget the formula, what I do is use the simple fact that I 3 is 50% greater than 2, or 2 is 100% greater than 1. That way I don't confuse which number goes where

3=2(1+.5)

But anyways, back to the problem: x = y(1+P) x = once every two minutes, or 5 times every ten minutes y = one every five minutes, or 2 times every ten minutes

Re: On average, the bottle-nosed dolphin comes up for air once [#permalink]

Show Tags

17 Apr 2012, 12:23

Expert's post

BN1989 wrote:

On average, the bottle-nosed dolphin comes up for air once every two minutes; the beluga whale, a close relative, comes up for air on average once every five minutes. The number of times a bottle-nosed dolphin would come up for air in a 24 hour period is approximately what percent greater than the number of times a beluga whale would come up for air in that same period?

A) 50% B) 100% C) 150% D) 200% E) 250%

This question asks for the percentage change, but I don't see what forumulation asks that in the question? I don't see which words indicate that not the percentage of bottle-nosen dolphins to beluga whales is looked for. Could anybody help me with the formulation in these kinds of problems, I sometimes get these problems wrong because I misunderstand what's looked for in the question.

Merging similar topics. Please ask if anything remains unclear. _________________

Re: On average, the bottle-nosed dolphin comes up for air once [#permalink]

Show Tags

12 Aug 2013, 09:03

slingfox wrote:

On average, the bottle-nosed dolphin comes up for air once every two minutes; the beluga whale, a close relative, comes up for air on average once every five minutes. The number of times a bottle-nosed dolphin would come up for air in a 24 hour period is approximately what percent greater than the number of times a beluga whale would come up for air in that same period?

A. 50% B. 100% C. 150% D. 200% E. 250%

One question I have is how to interpret a statement like the following: "X's height is 110% greater than that of Y." Does that mean X = 1.10*Y or X = 2.10*Y?

Re: On average, the bottle-nosed dolphin comes up for air once [#permalink]

Show Tags

14 Aug 2013, 11:39

Asifpirlo wrote:

slingfox wrote:

On average, the bottle-nosed dolphin comes up for air once every two minutes; the beluga whale, a close relative, comes up for air on average once every five minutes. The number of times a bottle-nosed dolphin would come up for air in a 24 hour period is approximately what percent greater than the number of times a beluga whale would come up for air in that same period?

A. 50% B. 100% C. 150% D. 200% E. 250%

One question I have is how to interpret a statement like the following: "X's height is 110% greater than that of Y." Does that mean X = 1.10*Y or X = 2.10*Y?

Re: On average, the bottle-nosed dolphin comes up for air once [#permalink]

Show Tags

14 Aug 2013, 12:33

Diipz wrote:

Asifpirlo wrote:

slingfox wrote:

On average, the bottle-nosed dolphin comes up for air once every two minutes; the beluga whale, a close relative, comes up for air on average once every five minutes. The number of times a bottle-nosed dolphin would come up for air in a 24 hour period is approximately what percent greater than the number of times a beluga whale would come up for air in that same period?

A. 50% B. 100% C. 150% D. 200% E. 250%

One question I have is how to interpret a statement like the following: "X's height is 110% greater than that of Y." Does that mean X = 1.10*Y or X = 2.10*Y?

Re: On average, the bottle-nosed dolphin comes up for air once [#permalink]

Show Tags

29 Dec 2013, 07:50

slingfox wrote:

On average, the bottle-nosed dolphin comes up for air once every two minutes; the beluga whale, a close relative, comes up for air on average once every five minutes. The number of times a bottle-nosed dolphin would come up for air in a 24 hour period is approximately what percent greater than the number of times a beluga whale would come up for air in that same period?

A. 50% B. 100% C. 150% D. 200% E. 250%

One question I have is how to interpret a statement like the following: "X's height is 110% greater than that of Y." Does that mean X = 1.10*Y or X = 2.10*Y?

This is pretty straightforward

BD every 2 min BW every 5 min

So in one hour BD 30 times BW 12 times

We are asked for percentage, in 24 hours it will show the same ratio so no need to calculate that actually, let's stick with 1 hour

Re: On average, the bottle-nosed dolphin comes up for air once [#permalink]

Show Tags

08 Jan 2015, 15:24

Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email. _________________

Re: On average, the bottle-nosed dolphin comes up for air once [#permalink]

Show Tags

02 Feb 2016, 03:25

Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email. _________________

Re: On average, the bottle-nosed dolphin comes up for air once [#permalink]

Show Tags

01 Apr 2016, 09:29

Please change difficulty level of this question to 600 or 500. Thank you.

Bunuel wrote:

On average, the bottle-nosed dolphin comes up for air once every two minutes; the beluga whale, a close relative, comes up for air on average once every five minutes. The number of times a bottle-nosed dolphin would come up for air in a 24 hour period is approximately what percent greater than the number of times a beluga whale would come up for air in that same period?

A. 50% B. 100% C. 150% D. 200% E. 250%

Dolphin once in 2 min; Beluga once in 5 min; So, dolphin comes up 2.5 times frequently than beluga, which is 150% (5-2)/2*100.

Answer: C.

"X's height is 110% greater than that of Y." Means: x=(1+110%)*y=(1+1.1)*y=2.1*y

Re: On average, the bottle-nosed dolphin comes up for air once [#permalink]

Show Tags

01 Apr 2016, 10:27

Expert's post

nktdotgupta wrote:

Please change difficulty level of this question to 600 or 500. Thank you.

Bunuel wrote:

On average, the bottle-nosed dolphin comes up for air once every two minutes; the beluga whale, a close relative, comes up for air on average once every five minutes. The number of times a bottle-nosed dolphin would come up for air in a 24 hour period is approximately what percent greater than the number of times a beluga whale would come up for air in that same period?

A. 50% B. 100% C. 150% D. 200% E. 250%

Dolphin once in 2 min; Beluga once in 5 min; So, dolphin comes up 2.5 times frequently than beluga, which is 150% (5-2)/2*100.

Answer: C.

"X's height is 110% greater than that of Y." Means: x=(1+110%)*y=(1+1.1)*y=2.1*y

The difficulty level is calculated automatically based on users sessions. _________________

MBA Admission Calculator Officially Launched After 2 years of effort and over 1,000 hours of work, I have finally launched my MBA Admission Calculator . The calculator uses the...

Final decisions are in: Berkeley: Denied with interview Tepper: Waitlisted with interview Rotman: Admitted with scholarship (withdrawn) Random French School: Admitted to MSc in Management with scholarship (...

The London Business School Admits Weekend officially kicked off on Saturday morning with registrations and breakfast. We received a carry bag, name tags, schedules and an MBA2018 tee at...