Bunuel wrote:

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

(1) Last week, 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.

NEW question from GMAT® Quantitative Review 2019

(DS07206)

Let 'c' be the total number of copies sold and k be the full price of each copy in dollar last week.

Given, number of copies sold at full price=40% of c=0.4c

So, 0.4c numbers of copies were sold at unit price k$.

Question stem:- # of copies, c=?

St1:-

Last week, full price for a copy of Magazine X was $1.50 and the total revenue from full-price sales was $112,500.So, k=1.5$

Total revenue=no of copies sold at full price*unit price

Or, 112500=0.4c*k=0.4c*1.5

Or, \(c=\frac{112500}{0.6}=187500\)

Sufficient.

St2:- The total number of copies of Magazine X sold last week at full price was 75,000.

Or, 0.4c=75000

Or, \(c=\frac{75000}{0.4}=187500\)

Sufficient.

Ans. (D)

_________________

Regards,

PKN

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