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M70-15

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M70-15  [#permalink]

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New post 03 Sep 2018, 04:20
00:00
A
B
C
D
E

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(N/A)

Question Stats:

75% (00:34) correct 25% (00:17) wrong based on 4 sessions

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Re M70-15  [#permalink]

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New post 03 Sep 2018, 04:20
Official Solution:


If the ratio of sleeping hours to waking hours is \(1:3\), what is the ratio of waking hours to the total number of hours in a day?


A. \(1:4\)
B. \(1:3\)
C. \(3:4\)
D. \(14:1\)
E. \(18:1\)


We’ll go for PRECISE because all the information we need is in the question.

If the ratio between two parts that make up a whole is \(x\) and \(y\), then the ratio between \(x\) and the whole is \(x:(x+y)\); thus, waking hours to total hours is \(3:(3+1) = 3:4\).


Answer: C
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Re M70-15   [#permalink] 03 Sep 2018, 04:20
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