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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 ## If a car traveled from Townsend to Smallville at an average tagged by: AAPL ##### This topic has 1 expert reply and 0 member replies ### Top Member ## If a car traveled from Townsend to Smallville at an average ## Timer 00:00 ## Your Answer A B C D E ## Global Stats Difficult Manhattan Prep If a car traveled from Townsend to Smallville at an average speed of 40 mph and then returned to Townsend later that evening, what was the average speed for the entire trip? 1) The trip from Townsend to Smallville took 50% longer than the trip from Smallville to Townsend. 2) The distance from Townsend to Smallville is 165 miles. OA A ### GMAT/MBA Expert GMAT Instructor Joined 25 May 2010 Posted: 15362 messages Followed by: 1866 members Upvotes: 13060 GMAT Score: 790 AAPL wrote: Manhattan Prep If a car traveled from Townsend to Smallville at an average speed of 40 mph and then returned to Townsend later that evening, what was the average speed for the entire trip? 1) The trip from Townsend to Smallville took 50% longer than the trip from Smallville to Townsend. 2) The distance from Townsend to Smallville is 165 miles. Statement 1: The trip from Townsend to Smallville took 50% longer than the trip from Smallville to Townsend. Case 1: Distance between Townsend and Smallville = 80 miles Time to travel from Townsend to Smallville at a speed of 40 mph = 80/40 = 2 hours. Time to travel from Smallville to Townsend = 2 hours + (50% of 2 hours) = 3 hours. Since the total time = 2+3 = 5 hours, the average speed for the entire 160-mile trip = 160/5 = 32 miles per hour. Case 2: Distance between Townsend and Smallville = 160 miles Time to travel from Townsend to Smallville at a speed of 40 mph = 160/40 = 4 hours. Time to travel from Smallville to Townsend = 4 hours + (50% of 4 hours) = 6 hours. Since the total time = 4+6 = 10 hours, the average speed for the entire 320-mile trip = 320/10 = 32 miles per hour. No matter the distance, the average speed = 32 miles per hour. SUFFICIENT. Statement 2: The distance from Townsend to Smallville is 165 miles. Since the speed from Smallville to Townsend can be any nonnegative value, the average speed for the entire trip cannot be determined. INSUFFICIENT. The correct answer is A. _________________ 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. • 5-Day Free Trial 5-day free, full-access trial TTP Quant 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 • 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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