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How long would it take for ball moving in a straight line to travel 24

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How long would it take for ball moving in a straight line to travel 24 [#permalink]

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New post 28 Mar 2017, 01:39
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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.
[Reveal] Spoiler: OA

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Re: How long would it take for ball moving in a straight line to travel 24 [#permalink]

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New post 28 Mar 2017, 12:54
Bunuel wrote:
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.


C.

1) 2 seconds per rotation, but no info on how many rotations per meter.
2) rotations per meter but no info on how long per rotation.

1 & 2 together works.
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Re: How long would it take for ball moving in a straight line to travel 24   [#permalink] 28 Mar 2017, 12:54
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