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If a certain wheel turns at a constant rate of x revolutions per minut

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Joined: 27 Sep 2015
Posts: 57
GMAT 1: 410 Q33 V13
WE: Management Consulting (Computer Software)
If a certain wheel turns at a constant rate of x revolutions per minut [#permalink]

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23 Dec 2015, 15:30
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Difficulty:

5% (low)

Question Stats:

73% (00:27) correct 27% (00:24) wrong based on 161 sessions

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If a certain wheel turns at a constant rate of x revolutions per minute, how many revolutions will the wheel make in k seconds?

(A) $$60kx$$
(B) $$kx$$
(C) $$\frac{x}{k}$$
(D) $$\frac{x}{60k}$$
(E) $$\frac{kx}{60}$$
[Reveal] Spoiler: OA

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Re: If a certain wheel turns at a constant rate of x revolutions per minut [#permalink]

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26 Dec 2015, 10:03
Hi All,

This question can be solved algebraically or by TESTing VALUES.

We're told that a wheel turns at a constant rate of X revolutions per MINUTE. We're asked for the number of revolutions the wheel makes in K SECONDS.

IF....
X = 10 revolutions per minute = 10 revolutions per 60 seconds = 1 revolution per 6 seconds
K = 6 seconds
The wheel will turn 1 revolution in 6 seconds.

So we're looking for an answer that equals 1 when X = 10 and K = 6. There's only one answer that matches...

[Reveal] Spoiler:
E

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Re: If a certain wheel turns at a constant rate of x revolutions per minut [#permalink]

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03 Dec 2017, 18:45
RSOHAL wrote:
If a certain wheel turns at a constant rate of x revolutions per minute, how many revolutions will the wheel make in k seconds?

(A) $$60kx$$
(B) $$kx$$
(C) $$\frac{x}{k}$$
(D) $$\frac{x}{60k}$$
(E) $$\frac{kx}{60}$$

Since k seconds is k/60 minutes, the wheel will make x * k/60 = xk/60 revolutions in k seconds.

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Re: If a certain wheel turns at a constant rate of x revolutions per minut   [#permalink] 03 Dec 2017, 18:45
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