• 7 CATs FREE!
If you earn 100 Forum Points

Engage in the Beat The GMAT forums to earn
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 ## How long would it take for ball moving in a straight line tagged by: VJesus12 ##### This topic has 1 expert reply and 0 member replies ## How long would it take for ball moving in a straight line How long would it take for ball moving in a straight line to travel 246 meters? (1) It takes the ball 2 seconds to make 1 rotation. (2)The ball makes 7 rotations per meter. The OA is C. Why do I need statement (2) to solve this DS question? I don't know how to use statement(1). Experts, can you give me your help? Thanks. ### GMAT/MBA Expert Elite Legendary Member Joined 23 Jun 2013 Posted: 9942 messages Followed by: 492 members Upvotes: 2867 GMAT Score: 800 Top Reply Hi VJesus12, We're asked how long it would take for a ball moving in a straight line to travel 246 meters. 1) It takes the ball 2 seconds to make 1 rotation. Fact 1 gives us some information about the 'speed' of the ball, but we don't know how much distance is traveled by 1 rotation. Fact 1 is INSUFFICIENT. 2)The ball makes 7 rotations per meter. Fact 2 tells us how much distance is traveled by 1 rotation (re: 1/7 meter) but does not tell us anything about the 'speed' of the ball. Fact 2 is INSUFFICIENT. Combined, we know the speed of the ball in rotations and seconds (14 seconds to travel 1 meter), so we CAN determine how long it would take to travel 246 meters. While we don't have to actually do the math, the equation would be: 246 meters = (1/14 meter per second)(X seconds) Combined, SUFFICIENT. Final Answer: C GMAT assassins aren't born, they're made, Rich _________________ Contact Rich at Rich.C@empowergmat.com • Free Practice Test & Review How would you score if you took the GMAT Available with Beat the GMAT members only code • FREE GMAT Exam Know how you'd score today for$0

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

Available with Beat the GMAT members only code

• Magoosh
Study with Magoosh GMAT prep

Available with Beat the GMAT members only code

• 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

• Award-winning private GMAT tutoring
Register now and save up to \$200

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

• Free Veritas GMAT Class
Experience Lesson 1 Live Free

Available with Beat the GMAT members only code

### Top First Responders*

1 Brent@GMATPrepNow 69 first replies
2 fskilnik@GMATH 54 first replies
3 Jay@ManhattanReview 48 first replies
4 GMATGuruNY 35 first replies
5 Rich.C@EMPOWERgma... 31 first replies
* Only counts replies to topics started in last 30 days
See More Top Beat The GMAT Members

### Most Active Experts

1 fskilnik@GMATH

GMATH Teacher

128 posts
2 Brent@GMATPrepNow

GMAT Prep Now Teacher

101 posts
3 Max@Math Revolution

Math Revolution

92 posts
4 Jay@ManhattanReview

Manhattan Review

86 posts
5 Rich.C@EMPOWERgma...

EMPOWERgmat

78 posts
See More Top Beat The GMAT Experts