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At the rate of 6,000 revolutions per minute, how many revolu
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22 Feb 2018, 07:26
22 Feb 2018, 07:26
Expert Reply
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Question Stats:
75% (00:27) correct
25% (00:03) wrong based on 8 sessions
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At the rate of 6,000 revolutions per minute, how many revolutions will a wheel make in x seconds?
A. \(6,000x\)
B. \(100x\)
C. \(\frac{100}{x}\)
D. \(\frac{6,000}{x}\)
E. \(\frac{360,000}{x}\)
A. \(6,000x\)
B. \(100x\)
C. \(\frac{100}{x}\)
D. \(\frac{6,000}{x}\)
E. \(\frac{360,000}{x}\)
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Joined: 15 Jan 2018
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Re: At the rate of 6,000 revolutions per minute, how many revolu
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22 Feb 2018, 23:31
22 Feb 2018, 23:31
1
Expert Reply
Any time you have to do a unit conversion, you will be either multiplying or dividing. One way to talk yourself through a unit conversion like this is to tell yourself "if it can do 6000 revolutions per minute, it must be able to do fewer revolutions in a second." That means you have to divide by 60, since there are 60 seconds in a minute. So since 6000/60 = 100, it can do 100 revolutions in one second. If it has x seconds, it must be able to do 100x revolutions in x seconds, so the answer is B.
gmatclubot
Re: At the rate of 6,000 revolutions per minute, how many revolu [#permalink]
22 Feb 2018, 23:31
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