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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 ## Bruno and Sacha are running in the same tagged by: VJesus12 ##### This topic has 2 expert replies and 0 member replies ### Top Member ## Bruno and Sacha are running in the same Bruno and Sacha are running in the same direction around a stadium. Sacha runs at a constant speed of 6 meters per second, and Bruno runs at a constant speed of 5 meters per second. At a certain point, Sacha overtakes Bruno. If one minute afterward, Sacha stops and waits for Bruno to reach her, then how many seconds does she have to wait? A. 12 B. 24 C. 36 D. 60 E. 72 The OA is A. I liked this question but I couldn't solve it. Experts, I would love if you could help me here. Thanks in advance. ### GMAT/MBA Expert GMAT Instructor Joined 04 Oct 2017 Posted: 551 messages Followed by: 11 members Upvotes: 180 Top Reply Hello Vjesus12. This is a nice question, and it is easier than you think. We have the following: Sacha runs at a constant speed of 6 meters per second Bruno runs at a constant speed of 5 meters per second So, the difference between them is 1 meter per second. If Sacha had to stop 1 minute, then she was 60 meters ahead of Bruno. Now, Bruno can run 60 meters in 60/5 =12 seconds. It implies that Sacha had to wait 12 seconds. The correct answer is A. I hope this explanation may help you. I'm available if you'd like a follow-up. Regards. _________________ GMAT Prep From The Economist We offer 70+ point score improvement money back guarantee. Our average student improves 98 points. Free 7-Day Test Prep with Economist GMAT Tutor - Receive free access to the top-rated GMAT prep course including a 1-on-1 strategy session, 2 full-length tests, and 5 ask-a-tutor messages. Get started now. ### GMAT/MBA Expert Legendary Member Joined 14 Jan 2015 Posted: 2667 messages Followed by: 122 members Upvotes: 1153 GMAT Score: 770 VJesus12 wrote: Bruno and Sacha are running in the same direction around a stadium. Sacha runs at a constant speed of 6 meters per second, and Bruno runs at a constant speed of 5 meters per second. At a certain point, Sacha overtakes Bruno. If one minute afterward, Sacha stops and waits for Bruno to reach her, then how many seconds does she have to wait? A. 12 B. 24 C. 36 D. 60 E. 72 The OA is A. I liked this question but I couldn't solve it. Experts, I would love if you could help me here. Thanks in advance. If Sacha runs at 6 meters/sec and Bruno runs at 5 meters/sec, then when they're both running, Sacha pulls away from Bruno at a rate of 6-5 = 1 meter/second 1 minute, or 60 seconds, after pulling even, Sacha will be 1 * 60 = 60 meters ahead of Bruno Once Sacha stops, Bruno will have to cover 60 meters to catch up. It will take Bruno 60/5 = 12 seconds to do so. The answer is A _________________ Veritas Prep | GMAT Instructor Veritas Prep Reviews Save$100 off any live Veritas Prep GMAT Course

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