Source: Official Guide for GMAT Review 2016 Data Sufficiency ; #52

1

The selling price of an article is equal

The selling price of an article is equal to the cost of the article plus the markup. The markup on a certain television set is what percent of the selling price?

1 Explanation

1

Danny Watts Jr

Selling price (p) = cost (c) plus markup (m); so p = c + m

(1): m = (1/4) c. Logically, this question is sufficient because price is simply the sum of the cost and markup. If we know the markup is 25% of the cost, then we should be able to find its ratio to the price. You can use values to solve this. If c = 8, then m must be 2, and since p = c + m, then p = 10. Thus, m must be 20% of the price. SUFFICIENT.

(2): price = $250. This option doesn't provide any detail regarding cost or markup, so it must be INSUFFICIENT.

Answer = A

Nov 11, 2017 • Comment

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Official GMAT Material

Official Guide for GMAT Review 2016

Official Guide for the GMAT 2015 14th Ed.

Official Guide for the GMAT 13th Ed.

Official Guide for the GMAT 12th Ed.

Revised GRE PDF 2nd Ed.


Section 6.3 Data Sufficiency

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