GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 10 Dec 2018, 19:06

Close

GMAT Club Daily Prep

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.

Close

Request Expert Reply

Confirm Cancel
Events & Promotions in December
PrevNext
SuMoTuWeThFrSa
2526272829301
2345678
9101112131415
16171819202122
23242526272829
303112345
Open Detailed Calendar
  • Free lesson on number properties

     December 10, 2018

     December 10, 2018

     10:00 PM PST

     11:00 PM PST

    Practice the one most important Quant section - Integer properties, and rapidly improve your skills.
  • Free GMAT Prep Hour

     December 11, 2018

     December 11, 2018

     09:00 PM EST

     10:00 PM EST

    Strategies and techniques for approaching featured GMAT topics. December 11 at 9 PM EST.

If a rocket can travel x/5 miles every y seconds, how many miles can i

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Board of Directors
User avatar
P
Joined: 01 Sep 2010
Posts: 3294
If a rocket can travel x/5 miles every y seconds, how many miles can i  [#permalink]

Show Tags

New post Updated on: 12 Jul 2018, 20:09
Top Contributor
2
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

69% (01:13) correct 31% (01:25) wrong based on 35 sessions

HideShow timer Statistics

If a rocket can travel \(\frac{x}{5}\) miles every y seconds, how many miles can it travel in z minutes?


A. \(\frac{xy}{5z}\)

B. \(\frac{xz}{5y}\)

C. \(\frac{xyz}{6}\)

D. \(\frac{12xy}{z}\)

E. \(\frac{12xz}{y}\)

_________________

COLLECTION OF QUESTIONS AND RESOURCES
Quant: 1. ALL GMATPrep questions Quant/Verbal 2. Bunuel Signature Collection - The Next Generation 3. Bunuel Signature Collection ALL-IN-ONE WITH SOLUTIONS 4. Veritas Prep Blog PDF Version 5. MGMAT Study Hall Thursdays with Ron Quant Videos
Verbal:1. Verbal question bank and directories by Carcass 2. MGMAT Study Hall Thursdays with Ron Verbal Videos 3. Critical Reasoning_Oldy but goldy question banks 4. Sentence Correction_Oldy but goldy question banks 5. Reading-comprehension_Oldy but goldy question banks


Originally posted by carcass on 12 Jul 2018, 08:38.
Last edited by Bunuel on 12 Jul 2018, 20:09, edited 1 time in total.
Renamed the topic.
Intern
Intern
User avatar
B
Joined: 17 May 2018
Posts: 43
Re: If a rocket can travel x/5 miles every y seconds, how many miles can i  [#permalink]

Show Tags

New post 12 Jul 2018, 08:51
1
First we need to convert the first rate in minutes. If x/5 miles are traveled in y seconds, we need to divide this distance by y to find the distance traveled in 1 second.

distance traveled in 1 second = x/5y

Then let's find the distance traveled in 1 minute, by multiplying the previous distance by 60.

distance traveled in 1 minute: 60x/5y

Finally we need to multiply this distance by z to find the distance traveled in z minutes:

distance traveled in z minutes: 60xz/5y.

Reduce the fraction: 12xz/y.

Answer E.
_________________

¿Tienes que presentar el GMAT y no sabes por dónde empezar?
¡Visita GMAT para Principiantes y recibe el curso completo gratis!

Math Expert
User avatar
V
Joined: 02 Aug 2009
Posts: 7100
Re: If a rocket can travel x/5 miles every y seconds, how many miles can i  [#permalink]

Show Tags

New post 12 Jul 2018, 09:16
2
carcass wrote:
If a rocket can travel \(\frac{x}{5}\) miles every y seconds, how many miles can it travel in z minutes?

A. \(\frac{xy}{5z}\)

B. \(\frac{xz}{5y}\)

C. \(\frac{xyz}{6}\)

D. \(\frac{12xy}{z}\)

E. \(\frac{12xz}{y}\)



1) Algebraic method :-
\(\frac{x}{5}\) in y seconds
so \(\frac{x}{5y}\) in 1 second
or \(\frac{60x}{5y}=\frac{12x}{y}\) in 60 seconds or 1 minute
therefore in z minutes \(\frac{12xz}{y}\)

2) substitution
take x = 5, so that 5/5 becomes 1
take y = 60 seconds, so that it becomes 1 minute
take z = 1
so 5/5 = 1 in 60 seconds or 1 minute which is same as z minute

substitute in choices and you should get 1 as the answer..
A. \(\frac{xy}{5z}......\frac{5*60}{5*1}\neq{1}\)

B. \(\frac{xz}{5y}..........\frac{5*1}{5*60}\neq{1}\)

C. \(\frac{xyz}{6}...........\frac{5*60*1}{6}\neq{1}\)

D. \(\frac{12xy}{z}.........\frac{12*5*60}{1}\neq{1}\)

E. \(\frac{12xz}{y}..........\frac{12*5*1}{60}=1\)...Answer


E
_________________

1) Absolute modulus : http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html
3) effects of arithmetic operations : https://gmatclub.com/forum/effects-of-arithmetic-operations-on-fractions-269413.html


GMAT online Tutor

Director
Director
User avatar
P
Joined: 31 Oct 2013
Posts: 844
Concentration: Accounting, Finance
GPA: 3.68
WE: Analyst (Accounting)
Re: If a rocket can travel x/5 miles every y seconds, how many miles can i  [#permalink]

Show Tags

New post 12 Jul 2018, 11:58
1
carcass wrote:
If a rocket can travel \(\frac{x}{5}\) miles every y seconds, how many miles can it travel in z minutes?

A. \(\frac{xy}{5z}\)

B. \(\frac{xz}{5y}\)

C. \(\frac{xyz}{6}\)

D. \(\frac{12xy}{z}\)

E. \(\frac{12xz}{y}\)



In y sec rocket can travel \(\frac{x}{5}\) miles

In 1 sec rocket can travel (x/5) /y miles

In 60 sec rocket can travel (x/5)*60 / y miles

So, In 1 min ( 60 sec) rocket can travel\(\frac{12x}{y}\) miles.

If in 1 min. rocket can travel \(\frac{12x}{y}\) miles , in z min it will travel \(\frac{12xz}{y}\) miles.


Thus the best answer is E.
GMAT Club Bot
Re: If a rocket can travel x/5 miles every y seconds, how many miles can i &nbs [#permalink] 12 Jul 2018, 11:58
Display posts from previous: Sort by

If a rocket can travel x/5 miles every y seconds, how many miles can i

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.