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

It is currently 18 Nov 2019, 19:05

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

If the speed of X meters per second is equivalent to the speed of Y ki

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

Hide Tags

Find Similar Topics 
Manager
Manager
avatar
Status: D-Day is on February 10th. and I am not stressed
Affiliations: American Management association, American Association of financial accountants
Joined: 12 Apr 2011
Posts: 156
Location: Kuwait
Schools: Columbia university
If the speed of X meters per second is equivalent to the speed of Y ki  [#permalink]

Show Tags

New post 03 Feb 2012, 08:24
7
65
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

72% (01:33) correct 28% (01:50) wrong based on 983 sessions

HideShow timer Statistics

If the speed of X meters per second is equivalent to the speed of Y kilometers per hour, what is Y in terms of X? (1 kilometer=1000 meters)

A. 5x/18
B. 6x/5
C. 18x/5
D. 60x
E. 3,600,000x

_________________
Sky is the limit
Most Helpful Expert Reply
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 59125
Re: If the speed of X meters per second is equivalent to the speed of Y ki  [#permalink]

Show Tags

New post 03 Feb 2012, 08:32
14
10
If the speed of X meters per second is equivalent to the speed of Y kilometers per hour, what is Y in terms of X? (1 kilometer=1000 meters)

A. 15x/18
B. 6x/5
C. 18x/5
D. 60x
E. 3600000x

X meters per second -->
--> 3,600X meters per hour (as there are 3,600 seconds in one hour);
--> 3,600X/1,000=18X/5 kilometers per hour (as there are 1,000 meters in one kilometer).

Answer: C.

OR: if you are not comfortable with above manipulations with variable X then you can assume x to be equal to some #: let x=10.

Speed = 10 meters per second -->
--> 10*3,600=36,000 meters per hour -->
--> 36,000/1000=36 kilometers per hour.

So, if x=10, then y=36. Plug x=10 into the answer choices, the one which give 36 will be the correct answer:
A. 15x/18=150/18<36;
B. 6x/5=60/5=12;
C. 18x/5=36 correct choice;
D. 60x=600;
E. 3,600,000x=36,000,000.

Answer: C.
_________________
Most Helpful Community Reply
Manager
Manager
User avatar
Joined: 24 Jan 2013
Posts: 64
Re: If the speed of X meters per second is equivalent to the speed of Y ki  [#permalink]

Show Tags

New post 19 Mar 2013, 16:23
18
5
If the speed of x meters per second is equivalent to the speed of y kilometers per hour, what is y in terms of x? (1 kilometer=1000meters).

\(y*\frac{kilometers}{hour}=x*\frac{meters}{seconds}\)

\(y*\frac{1\;kilometer}{1\; hour}*\frac{1000 \;meters}{1 \;kilometer}*\frac{1\; hour}{3600 \;seconds}=x*\frac{meters}{seconds}\)

\(y*\frac{1000 \;meters}{3600 \;seconds}=x*\frac{meters}{seconds}\) --------> \(y=\frac{3600}{1000}*x=\frac{18}{5}*x\)

Answer C
General Discussion
Manager
Manager
avatar
Joined: 11 Aug 2012
Posts: 109
Schools: HBS '16, Stanford '16
Re: If the speed of X meters per second is equivalent to the speed of Y ki  [#permalink]

Show Tags

New post 30 Oct 2012, 08:48
Bunuel, is this a word problem or what tipe of problem is?
Do you have a link to find more of these problems, please?
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 59125
If the speed of X meters per second is equivalent to the speed of Y ki  [#permalink]

Show Tags

New post 30 Oct 2012, 10:07
7
9
danzig wrote:
Bunuel, is this a word problem or what tipe of problem is?
Do you have a link to find more of these problems, please?


It's a conversion problem. Below are some similar questions to practice:

Other conversion problems to practice:
http://gmatclub.com/forum/if-an-object- ... 03364.html
http://gmatclub.com/forum/the-rear-whee ... 35753.html
http://gmatclub.com/forum/a-train-trave ... 87124.html
http://gmatclub.com/forum/a-welder-rece ... 26154.html
http://gmatclub.com/forum/a-car-traveli ... 26658.html
http://gmatclub.com/forum/if-an-automob ... 09083.html
http://gmatclub.com/forum/if-1-kilomete ... 40731.html
http://gmatclub.com/forum/measuring-sta ... 06516.html
http://gmatclub.com/forum/if-10-millime ... 48538.html
http://gmatclub.com/forum/the-speed-of- ... 49492.html
http://gmatclub.com/forum/the-rear-whee ... 35753.html

Hope it helps.
_________________
Senior Manager
Senior Manager
User avatar
Joined: 13 May 2013
Posts: 398
Re: If the speed of X meters per second is equivalent to the speed of Y ki  [#permalink]

Show Tags

New post 02 Aug 2013, 11:05
1
If the speed of X meters per second is equivalent to the speed of Y kilometers per hour, what is Y in terms of X? (1 kilometer=1000 meters)

We need to find an equation with x in the answer...
convert all measurements so they are alike (i.e. convert km to m, seconds to hours, etc)

Speed = x/t
x meters/second
(3600) x meters/hour

Speed = y/t
y KM/hour
Speed = y(1000m)/hour

y(1000meters)/hour = (3600) x meters/hour

y(1000)/1hour = x(3600) / 1 hour
y(1000) = x(3600)
y = 3.6x

Answer: C. 18x/5
SVP
SVP
User avatar
Status: The Best Or Nothing
Joined: 27 Dec 2012
Posts: 1729
Location: India
Concentration: General Management, Technology
WE: Information Technology (Computer Software)
Re: If the speed of X meters per second is equivalent to the speed of Y ki  [#permalink]

Show Tags

New post 02 Sep 2014, 22:40
2
x meters in 1 second i.e

\(\frac{x}{1000}\) Kms in 1 Second i.e

\(\frac{x}{1000}\) Kms in \(\frac{1}{60}\) Minutes i.e

\(\frac{x}{1000}\) Kms in \(\frac{1}{3600}\) Hour i.e

\(\frac{x}{1000} * 3600\) in 1 Hr = Y

\(y = \frac{18x}{5}\)

Answer = C
_________________
Kindly press "+1 Kudos" to appreciate :)
Retired Moderator
User avatar
P
Joined: 19 Mar 2014
Posts: 917
Location: India
Concentration: Finance, Entrepreneurship
GPA: 3.5
GMAT ToolKit User
Re: If the speed of X meters per second is equivalent to the speed of Y ki  [#permalink]

Show Tags

New post 26 Jun 2017, 01:47
3
If the speed of X meters per second is equivalent to the speed of Y kilometers per hour, what is Y in terms of X? (1 kilometer=1000 meters)

In order to avoid the confusion in conversions, lets write this equation in its simplistic format.

\(x * \frac{Meters}{Second} = y * \frac{Kilometers}{Hour}\)

\(x * \frac{Meters}{Second} = y * \frac{Kilometers}{Hour} * \frac{(1000) Meters}{(1) Kilometer} *\frac{(1) Hour}{(60 * 60) Seconds}\)

Cancelling out the units - Kilometers and Hours on the R.H.S.

\(x * \frac{Meters}{Second} = y * \frac{(1000) Meters}{(3600) Seconds}\)

\(x * \frac{Meters}{Second} = y * \frac{(5) Meters}{(18) Seconds}\)

Lets take values in terms of y:

\(y * \frac{Meters}{Seconds} = x * \frac{Meters}{Second}* \frac{18}{5}\)

Which means:

\(y = \frac{18x}{5}\)

Hence, the answer is C

Hope you LIKE this solution, if YES, 1 Kudos Please :cool
_________________
"Nothing in this world can take the place of persistence. Talent will not: nothing is more common than unsuccessful men with talent. Genius will not; unrewarded genius is almost a proverb. Education will not: the world is full of educated derelicts. Persistence and determination alone are omnipotent."

Best AWA Template: https://gmatclub.com/forum/how-to-get-6-0-awa-my-guide-64327.html#p470475
EMPOWERgmat Instructor
User avatar
V
Status: GMAT Assassin/Co-Founder
Affiliations: EMPOWERgmat
Joined: 19 Dec 2014
Posts: 15476
Location: United States (CA)
GMAT 1: 800 Q51 V49
GRE 1: Q170 V170
Re: If the speed of X meters per second is equivalent to the speed of Y ki  [#permalink]

Show Tags

New post 28 Feb 2018, 22:10
1
2
Hi All,

This question can be solved in a couple of different ways; you can use unit conversions or you can use TEST IT:

We're asked to convert X meters/second into Y kilometers/hour....

If X = 2, then...

2 meters/second =
120 meters/minute =
7200 meters/hour =
7.2 kilometers/hour

So we need an answer that equals 7.2 when X = 2

Plugging 2 into each of the answers gives us...

A) 10/18 = 5/9
B) 12/5 = 2.4
C) 36/5 = 7.2
D) 120
E) 7,200,000

Final Answer:

GMAT assassins aren't born, they're made,
Rich
_________________
Contact Rich at: Rich.C@empowergmat.com
Image


The Course Used By GMAT Club Moderators To Earn 750+

souvik101990 Score: 760 Q50 V42 ★★★★★
ENGRTOMBA2018 Score: 750 Q49 V44 ★★★★★
Target Test Prep Representative
User avatar
G
Status: Head GMAT Instructor
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2812
Re: If the speed of X meters per second is equivalent to the speed of Y ki  [#permalink]

Show Tags

New post 18 Aug 2018, 19:53
manalq8 wrote:
If the speed of X meters per second is equivalent to the speed of Y kilometers per hour, what is Y in terms of X? (1 kilometer=1000 meters)

A. 5x/18
B. 6x/5
C. 18x/5
D. 60x
E. 3600000x


There are 3,600 seconds in an hour and 1,000 meters in a kilometer. So, let’s convert y kilometers/hour to meters/second:

We can start by converting y kilometers to meters.

y kilometers = 1,000y meters

Next we can convert 1 hour to seconds.

1 hour = 3,600 seconds

Thus, y km/hr can be expressed as 1,000y/3,600 m/sec, or 5y/18 m/sec, after it’s simplified.

Since our two rates are equal, x = 5y/18. We need to solve this equation for y.

18x = 5y

18x/5 = y

Answer: C
_________________

Jeffrey Miller

Head of GMAT Instruction

Jeff@TargetTestPrep.com
TTP - Target Test Prep Logo
122 Reviews

5-star rated online GMAT quant
self study course

See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews

If you find one of my posts helpful, please take a moment to click on the "Kudos" button.

Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 59125
Re: If the speed of X meters per second is equivalent to the speed of Y ki  [#permalink]

Show Tags

New post 08 Oct 2019, 07:36
SVP
SVP
User avatar
P
Joined: 03 Jun 2019
Posts: 1849
Location: India
Premium Member Reviews Badge CAT Tests
Re: If the speed of X meters per second is equivalent to the speed of Y ki  [#permalink]

Show Tags

New post 08 Oct 2019, 10:06
manalq8 wrote:
If the speed of X meters per second is equivalent to the speed of Y kilometers per hour, what is Y in terms of X? (1 kilometer=1000 meters)

A. 5x/18
B. 6x/5
C. 18x/5
D. 60x
E. 3,600,000x


Y km/hr = Y 1000 / 60*60 m/s = 5Y/18 m/s = X m/s
Y = 18X/5

IMO C
_________________
"Success is not final; failure is not fatal: It is the courage to continue that counts."

Please provide kudos if you like my post. Kudos encourage active discussions.

My GMAT Resources: -

Efficient Learning
All you need to know about GMAT quant

Tele: +91-11-40396815
Mobile : +91-9910661622
E-mail : kinshook.chaturvedi@gmail.com
GMAT Club Bot
Re: If the speed of X meters per second is equivalent to the speed of Y ki   [#permalink] 08 Oct 2019, 10:06
Display posts from previous: Sort by

If the speed of X meters per second is equivalent to the speed of Y ki

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





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