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If \(r - s = 240,\) does \(r = 320?\)

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Source: — Data Sufficiency |
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Re: If \(r - s = 240,\) does \(r = 320?\)

by deloitte247 » Sun Oct 18, 2020 6:31 am

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B

C

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$$If\ r-s=240,\ does\ r=320?$$
Statement 1: r = 4s
From the question stem, r - s = 240
4s - s = 240
3s = 240
s = 240/3 = 80
If r = 4s
r = 4 * 80 = 320
Since r = 320, it answers our target question. Therefore, statement 1 is SUFFICIENT.

Statement 2: s = 80
From the question stem, r - s = 240
r - 80 = 240
r = 240 + 80
r = 320
Since r = 320, it answers our target question. Therefore, statement 2 is SUFFICIENT.

From above, each statement alone is SUFFICIENT, so, therefore, option D is the correct answer.
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