Bunuel wrote:

CHALLENGE QUESTION:

A clothing retailer bought 2 shipments of equal numbers of dresses at the same price. When the first shipment was sold in its entirety at $70 per dress, it generated $1,600 in profits. When the retailer sold the second shipment in its entirety at $90 per dress, it generated $2,400 in profits. What was the total number of dresses in both shipments?

(A) 40

(B) 50

(C) 60

(D) 80

(E) 100

Since the number of dresses and cost price is the same in both,

Simply note that an extra $20 charge ($90 sale price instead of $70 sale price) led to an extra profit of $800 (= 2400 - 1600).

So there must have been 800/20 = 40 dresses in one lot.

This means a total of 80 dresses.

Answer (D)

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Karishma

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