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Of the total number of copies of Magazine \(X\) sold last

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by BTGmoderatorLU » Sat Jul 13, 2019 2:41 pm

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A

B

C

D

E

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Source: Official Guide

Of the total number of copies of Magazine \(X\) sold last week, 40 percent was sold at full price. What was the total number of copies of the magazine sold last week?

1. Last week, the full price for a copy of Magazine \(X\) was $1.50 and the total revenue from full-price sales was $112,500.
2. The total number of copies of Magazine \(X\) sold last week at full price was 75,000.

The OA is D
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Source: — Data Sufficiency |

by Jay@ManhattanReview » Mon Jul 15, 2019 8:55 pm
BTGmoderatorLU wrote:Source: Official Guide

Of the total number of copies of Magazine \(X\) sold last week, 40 percent was sold at full price. What was the total number of copies of the magazine sold last week?

1. Last week, the full price for a copy of Magazine \(X\) was $1.50 and the total revenue from full-price sales was $112,500.
2. The total number of copies of Magazine \(X\) sold last week at full price was 75,000.

The OA is D
Say the total no. of copies sold = x;

Thus, the total no. of copies sold at full price = 40% of x = 0.4x

Let's take each statement one by one.

1. Last week, the full price for a copy of Magazine \(X\) was $1.50 and the total revenue from full-price sales was $112,500.

Total no. of copies sold at full price = 112,500/1.50 = 0.4x => x = a unique value. Sufficient.

2. The total number of copies of Magazine \(X\) sold last week at full price was 75,000.

=> 0.4x = 75,000 => x = a unique value. Sufficient.


The correct answer: D

Hope this helps!

-Jay
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