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100 points for $49 worth of Veritas practice GMATs FREE VERITAS PRACTICE GMAT EXAMS Earn 10 Points Per Post Earn 10 Points Per Thanks Earn 10 Points Per Upvote ## Peter and Tom shared the driving on a certain trip. tagged by: Gmat_mission ##### This topic has 2 expert replies and 0 member replies ### Top Member ## Peter and Tom shared the driving on a certain trip. ## Timer 00:00 ## Your Answer A B C D E ## Global Stats Difficult 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 OA=E Souce: GMAT Prep ### GMAT/MBA Expert GMAT Instructor Joined 25 May 2010 Posted: 15344 messages Followed by: 1864 members Upvotes: 13060 GMAT Score: 790 Top Reply Gmat_mission wrote: 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 and the time for each driver = 1 hour. Since Peter drives 2/5 of the total distance -- 2 miles -- in 1 hour, Peter's speed = d/t = 2/1 = 2 miles per hour. Since Tom drives the remaining distance -- 3 miles -- in 1 hour, Tom's speed = d/t = 3/1 = 3 miles per hour. Resulting ratio: (Peter's speed) : (Tom's speed) = 2:3. The correct answer is E. _________________ Mitch Hunt Private Tutor for the GMAT and GRE GMATGuruNY@gmail.com If you find one of my posts helpful, please take a moment to click on the "UPVOTE" icon. Available for tutoring in NYC and long-distance. For more information, please email me at GMATGuruNY@gmail.com. Student Review #1 Student Review #2 Student Review #3 Free GMAT Practice Test How can you improve your test score if you don't know your baseline score? Take a free online practice exam. Get started on achieving your dream score today! Sign up now. ### GMAT/MBA Expert GMAT Instructor Joined 25 Apr 2015 Posted: 2791 messages Followed by: 18 members Upvotes: 43 Gmat_mission wrote: 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 OA=E Souce: GMAT Prep We can let the time driven by Peter and Tom = t. If we let the total distance = d, then Peterâ€™s distance = (2/5)d = 2d/5 and Tomâ€™s distance = (3/5)d = 3d/5. Thus, Peterâ€™s rate is (2d/5)/t = 2d/(5t), and Tomâ€™s rate is (3d/5)/t = 3d/(5t). The ratio of Peterâ€™s average speed to Tomâ€™s average speed is (2d/5t)/(3d/5t) = 10dt/(15dt) = 2/3. Answer: E _________________ Scott Woodbury-Stewart Founder and CEO scott@targettestprep.com See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews • 5 Day FREE Trial Study Smarter, Not Harder Available with Beat the GMAT members only code • 1 Hour Free BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • Free Veritas GMAT Class Experience Lesson 1 Live Free Available with Beat the GMAT members only code • Free Practice Test & Review How would you score if you took the GMAT Available with Beat the GMAT members only code • Free Trial & Practice Exam BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • Get 300+ Practice Questions 25 Video lessons and 6 Webinars for FREE Available with Beat the GMAT members only code • FREE GMAT Exam Know how you'd score today for$0

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