If Tom goes y miles in x hours, how many miles does he go per minute, in terms of x and y?
A. 60x/y
B. y/60x
C. 60y/x
D. x/60y
E. 60xy
Can some experts show me the best solution in this problem?
OA B
If Tom goes y miles in x hours
This topic has expert replies
-
- Moderator
- Posts: 7187
- Joined: Thu Sep 07, 2017 4:43 pm
- Followed by:23 members
- GMATGuruNY
- GMAT Instructor
- Posts: 15539
- Joined: Tue May 25, 2010 12:04 pm
- Location: New York, NY
- Thanked: 13060 times
- Followed by:1906 members
- GMAT Score:790
(y miles)/(x hours) * (1 hour)/(60 minutes) = y/(60x) miles per minute.lheiannie07 wrote:If Tom goes y miles in x hours, how many miles does he go per minute, in terms of x and y?
A. 60x/y
B. y/60x
C. 60y/x
D. x/60y
E. 60xy
In the equation above, the units in red CANCEL OUT, leaving the units in blue.
The correct answer is B.
An alternate approach is to PLUG IN.
How many miles does he go per minute?
Let the rate = 2 miles per minute.
Tom goes y miles in x hours.
(2 miles per minute)(60 minutes) = 120 miles per hour, implying that y=120 miles and x=1 hour.
The question stem asks for the number of miles per minute.
Thus, the green value above is our target: 2 miles per minute.
Now plug y=120 and x=1 into the answers to see which yields our target value of 2.
Only B works:
y/(60x) = 120/(60*1) = 2.
The correct answer is B.
Private tutor exclusively for the GMAT and GRE, with over 20 years of experience.
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.
As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.
For more information, please email me (Mitch Hunt) at [email protected].
Student Review #1
Student Review #2
Student Review #3
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.
As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.
For more information, please email me (Mitch Hunt) at [email protected].
Student Review #1
Student Review #2
Student Review #3
GMAT/MBA Expert
- Jeff@TargetTestPrep
- GMAT Instructor
- Posts: 1462
- Joined: Thu Apr 09, 2015 9:34 am
- Location: New York, NY
- Thanked: 39 times
- Followed by:22 members
We are given that Tom goes y miles in x hours, so he has a rate of y miles/x hours. To determine his rate in miles per minute, let's convert x hours to minutes:lheiannie07 wrote:If Tom goes y miles in x hours, how many miles does he go per minute, in terms of x and y?
A. 60x/y
B. y/60x
C. 60y/x
D. x/60y
E. 60xy
x hours = 60x minutes
Thus, his rate in miles per minute is y/(60x).
Answer: B
Jeffrey Miller
Head of GMAT Instruction
[email protected]
See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews