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# At a constant rate of 12,000 rotations per hour, how many rotations do

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Math Expert
Joined: 02 Sep 2009
Posts: 58452
At a constant rate of 12,000 rotations per hour, how many rotations do  [#permalink]

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19 Feb 2019, 21:50
00:00

Difficulty:

25% (medium)

Question Stats:

76% (00:43) correct 24% (01:12) wrong based on 25 sessions

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At a constant rate of 12,000 rotations per hour, how many rotations does a spinning top make in p minutes?

A. 12,000p
B. 200p
C. 72,000/p
D. 12,000/p
E. 200/p

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Re: At a constant rate of 12,000 rotations per hour, how many rotations do  [#permalink]

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19 Feb 2019, 23:57
1
Bunuel wrote:
At a constant rate of 12,000 rotations per hour, how many rotations does a spinning top make in p minutes?

A. 12,000p
B. 200p
C. 72,000/p
D. 12,000/p
E. 200/p

per min
12,000/60 = 200 rpm
so in p mins ; 200 * p
IMO B
Re: At a constant rate of 12,000 rotations per hour, how many rotations do   [#permalink] 19 Feb 2019, 23:57
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