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

Statement 2 - if half trip can be covered in 1476 rotations, the full trip can be covered in 1476*2 = 2952 rotations. But we don't know the number of rotations per unit time, so we cannot answer. Insufficient.



Hi. I think we can't assume that the full trip can be covered in 1476*2 rotations as it is not mentioned that the ball is moving at a constant speed. It could be so that the speed reduces due to friction.

Please correct if I'm wrong.
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Re: How long would it take for ball moving in a straight line to travel 24 [#permalink]
abhishek911 wrote:
amanvermagmat wrote:

Statement 2 - if half trip can be covered in 1476 rotations, the full trip can be covered in 1476*2 = 2952 rotations. But we don't know the number of rotations per unit time, so we cannot answer. Insufficient.



Hi. I think we can't assume that the full trip can be covered in 1476*2 rotations as it is not mentioned that the ball is moving at a constant speed. It could be so that the speed reduces due to friction.

Please correct if I'm wrong.


I think you have a point. Most likely in GMAT it would be mentioned in the question whether we have to assume the ball to be moving at a uniform speed or not.
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Re: How long would it take for ball moving in a straight line to travel 24 [#permalink]
This was a pretty simple one. Time is required. And there are no values that can help determining it.
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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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