Source: GMAT Prep
Peter and Tom shared the driving on a certain trip. If Peter and Tom both drove for the same amount of time, but Peter only drove 2/5 of the total distance, what was the ratio of Peter's average speed to Tom's average speed?
A. 1:5
B. 2:5
C. 1:2
D. 3:5
E. 2:3
The OA is E
Peter and Tom shared the driving on a certain trip. If Peter
This topic has expert replies
-
- Moderator
- Posts: 2209
- Joined: Sun Oct 15, 2017 1:50 pm
- Followed by:6 members
Timer
00:00
Your Answer
A
B
C
D
E
Global Stats
GMAT/MBA Expert
- Jay@ManhattanReview
- GMAT Instructor
- Posts: 3008
- Joined: Mon Aug 22, 2016 6:19 am
- Location: Grand Central / New York
- Thanked: 470 times
- Followed by:34 members
Given that Peter only drove 2/5 of the total distance, Tom must drove 1 - 2/5 = 3/5 of the total distance.BTGmoderatorLU wrote:Source: GMAT Prep
Peter and Tom shared the driving on a certain trip. If Peter and Tom both drove for the same amount of time, but Peter only drove 2/5 of the total distance, what was the ratio of Peter's average speed to Tom's average speed?
A. 1:5
B. 2:5
C. 1:2
D. 3:5
E. 2:3
The OA is E
Since time is same, the ratio of Peter's average speed to Tom's average speed = Ratio of their distances = (2/5) : (3/5) = 2 : 3
The correct answer: E
Hope this helps!
-Jay
_________________
Manhattan Review GMAT Prep
Locations: GMAT Classes Birmingham | GMAT Prep Courses Singapore | LSAT Prep Courses Chicago | Manhattan SAT Prep Classes | and many more...
Schedule your free consultation with an experienced GMAT Prep Advisor! Click here.
- 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
Let the time for each driver = 1 hour.BTGmoderatorLU wrote:Source: GMAT Prep
Peter and Tom shared the driving on a certain trip. If Peter and Tom both drove for the same amount of time, but Peter only drove 2/5 of the total distance, what was the ratio of Peter's average speed to Tom's average speed?
A. 1:5
B. 2:5
C. 1:2
D. 3:5
E. 2:3
Let the total distance = 5 miles, implying that Peter's distance = (2/5)(5) = 2 miles and that Tom's distance = 5-2 = 3 miles.
Since Peter drives 2 miles in 1 hour, Peter's rate = 2 mph.
Since Tom drives 3 miles in 1 hour, Tom's rate = 3 mph.
Thus:
(Peter's speed):(Tom's speed) = 2:3.
The correct answer is E.
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