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At the rate of 3,000 revolutions per minute, how many revolu

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At the rate of 3,000 revolutions per minute, how many revolu [#permalink] New post 04 Aug 2018, 10:46
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At the rate of 3,000 revolutions per minute, how many revolutions will a wheel make in k seconds?

A. \(3,000k\)

B. \(50k\)

C. \(\frac{50}{k}\)

D. \(\frac{3,000}{k}\)

E. \(\frac{180,000}{k}\)
[Reveal] Spoiler: OA

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Re: At the rate of 3,000 revolutions per minute, how many revolu [#permalink] New post 04 Aug 2018, 18:10
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Carcass wrote:
At the rate of 3,000 revolutions per minute, how many revolutions will a wheel make in k seconds?

A. \(3,000k\)

B. \(50k\)

C. \(\frac{50}{k}\)

D. \(\frac{3,000}{k}\)

E. \(\frac{180,000}{k}\)


As the wheel makes 3000 revolutions in a minute or 60 seconds time,

So in 1 second it will make =\(\frac{3000}{60} = 50 rev\)

Therefore, in k seconds, the wheel will make = \(50 * k = 50k rev\)
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Re: At the rate of 3,000 revolutions per minute, how many revolu   [#permalink] 04 Aug 2018, 18:10
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