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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 ## At what speed was Erik running when he was at the halfway po ##### This topic has 2 expert replies and 0 member replies ### Top Member ## At what speed was Erik running when he was at the halfway po ## Timer 00:00 ## Your Answer A B C D E ## Global Stats Difficult At what speed was Erik running when he was at the halfway point of his route? 1. Erik's route was 10 miles long and took him 2 hours to complete. 2. Erik ran at an average speed of 5 miles per hour on the route OA E Source: Veritas Prep ### GMAT/MBA Expert GMAT Instructor Joined 08 Dec 2008 Posted: 12744 messages Followed by: 1247 members Upvotes: 5254 GMAT Score: 770 Top Reply BTGmoderatorDC wrote: At what speed was Erik running when he was at the halfway point of his route? 1. Erik's route was 10 miles long and took him 2 hours to complete. 2. Erik ran at an average speed of 5 miles per hour on the route OA E Source: Veritas Prep IMPORTANT: The two statements essentially provide the exact same information. If it took Erik 2 hours to travel 10 miles, we can conclude that his average speed was 5 miles per hour. When the two statements provide the same information in a Data Sufficiency question, the correct answer must be either D or E Target question: At what speed was Erik running when he was at the halfway point of his route? Statements 1 and 2 combined There are several scenarios that satisfy BOTH statements. Here are two: Case a: Erik traveled the first 1 mile at 1 mile per hour, and then traveled the last 9 miles at 9 miles per hour. So, at the halfway mark (upon completion of the 5th mile), Erik was running at a speed of 9 mph Case b: Erik traveled the first 2 miles at 2 miles per hour, and then traveled the last 8 miles at 8 miles per hour. So, at the halfway mark (upon completion of the 5th mile), Erik was running at a speed of 8 mph Since we cannot answer the target question with certainty, the combined statements are NOT SUFFICIENT Answer: E Cheers, Brent _________________ Brent Hanneson – Creator of GMATPrepNow.com Use our video course along with Sign up for our free Question of the Day emails And check out all of our free resources GMAT Prep Now's comprehensive video course can be used in conjunction with Beat The GMAT’s FREE 60-Day Study Guide and reach your target score in 2 months! ### GMAT/MBA Expert GMAT Instructor Joined 22 Aug 2016 Posted: 1821 messages Followed by: 29 members Upvotes: 470 Top Reply BTGmoderatorDC wrote: At what speed was Erik running when he was at the halfway point of his route? 1. Erik's route was 10 miles long and took him 2 hours to complete. 2. Erik ran at an average speed of 5 miles per hour on the route OA E Source: Veritas Prep We are asked to find out Erik's speed when he was at the halfway point of his route. Note that his speed may vary through his route many times. Let's take each statement one by one. 1. Erik's route was 10 miles long and took him 2 hours to complete. From this data, we can compute Erik's average speed = 10 miles / 2 hours = 5 miles per hour. But Erik's could have been running at the halfway at 5 mph, greater than 5 mph or less than 5 mph. No unique answer. 2. Erik ran at an average speed of 5 miles per hour on the route. This is the same statement as Statement 1. Insufficient. (1) and (2) together Both the statements are actually the same. Insufficient. The correct answer: E Hope this helps! -Jay _________________ Manhattan Review GMAT Prep Locations: Manhattan Review New Delhi | Hyderabad | GRE Prep Chennai | Madhapur GRE Coaching | and many more... Schedule your free consultation with an experienced GMAT Prep Advisor! Click here. • 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 • Award-winning private GMAT tutoring Register now and save up to$200

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