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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 ## Distance and Time from OG ##### This topic has 3 member replies ## Distance and Time from OG This question is from powerPrep pracrice test One hour after Yolanda started walking from X to Y, a distance of 45 miles, Bob started walking along the same road from Y to X. If Yolandas waling rate was 3mile per hour and Bob's was 4 miles per hour, how many miles had Bop walked when they met? a. 24 b.23 c.22 d.21 e.19.5 Just wondering if there is a shorter way out. This is how understood since Yolanda started one hour ahead, she had covered 3 miles already D= S * T 3m/h * 1 hr = 3 therefore remaining distance is 45-3=42 Sice they are moving in the opposite direction, add their speed 3+4 = 7m/h therefore, time = 42/7 = 6hrs hence bob would travel 4*6 = 24 miles Please let me know if there is a shortcut Safisana Junior | Next Rank: 30 Posts Joined 07 Jun 2008 Posted: 25 messages Target GMAT Score: 760 there is not shorcut method for this kind of example but its very easy.. it will hardly take 30-45 second once you understand question Thanks Vishal Shah Senior | Next Rank: 100 Posts Joined 21 May 2007 Posted: 62 messages Because 'meeting' SDT qs confuse me, I've decided to do them the non-algebraic way (since it is hit and miss for me) so i would just calculate how far they got in 1 hr, 2hrs, 3 hrs etc. Even the MGMAT online class which uses this question presents this simple method as a plausible alternative to algebra. Just something to bear in mind if yo find these hard! Senior | Next Rank: 100 Posts Joined 15 Sep 2008 Posted: 31 messages Upvotes: 3 Target GMAT Score: 720 Total distance = 45 Let they meet aftr t hours so Yolanda travelled for t hrs and Bob for (t-1) hours Eq: 3t + 4(t-1) = 45 => t = 7 Bob travelled 4 (7-1) = 24 safisana wrote: This question is from powerPrep pracrice test One hour after Yolanda started walking from X to Y, a distance of 45 miles, Bob started walking along the same road from Y to X. If Yolandas waling rate was 3mile per hour and Bob's was 4 miles per hour, how many miles had Bop walked when they met? a. 24 b.23 c.22 d.21 e.19.5 Just wondering if there is a shorter way out. This is how understood since Yolanda started one hour ahead, she had covered 3 miles already D= S * T 3m/h * 1 hr = 3 therefore remaining distance is 45-3=42 Sice they are moving in the opposite direction, add their speed 3+4 = 7m/h therefore, time = 42/7 = 6hrs hence bob would travel 4*6 = 24 miles Please let me know if there is a shortcut Safisana • 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 • 5-Day Free Trial 5-day free, full-access trial TTP Quant Available with Beat the GMAT members only code • 5 Day FREE Trial Study Smarter, Not Harder Available with Beat the GMAT members only code • Free Trial & Practice Exam BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • Magoosh Study with Magoosh GMAT prep Available with Beat the GMAT members only code • Award-winning private GMAT tutoring Register now and save up to$200

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