BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Computer store

Expert replies
Source: — Problem Solving |

by GMATGuruNY » Wed Dec 30, 2015 8:18 am
If a certain store purchased a computer game and then sold it for $50, was the store's gross profit from the purchase and sale of the game less than $8?

(1) The store 's gross profit from the purchase and sale of the game was less than 25 percent of the amount for which the store purchased the game
(2) The store 's gross profit from the purchase and sale of the game was greater than 10 percent of the amount for which the store purchased the game
Is the difference between the $50 selling price and the cost of the game greater than $8?
50 - C > 8
42 > C
C < 42

Question stem, rephrased:
Is C < 42?

Statement 1:
In other words, the difference between the $50 selling price and the cost of the game was less than 1/4 of the cost:
50 - C < (1/4)C
50 < (5/4)C
40 < C
C > 40.
If C = 41, then the answer to the question stem is YES.
If C = 43, then the answer to the question stem is NO.
INSUFFICIENT.

Statement 2:
In other words, the difference between the $50 selling price and the cost of the game was more than 1/10 of the cost:
50 - C > (1/10)C
50 > (11/10)C
500/11 > C
C < 500/11
C < 45+.
If C = 41, then the answer to the question stem is YES.
If C = 43, then the answer to the question stem is NO.
INSUFFICIENT.

Statements combined:
40 < C < 45+.
If C = 41, then the answer to the question stem is YES.
If C = 43, then the answer to the question stem is NO..
INSUFFICIENT.

The correct answer is E.
Private tutor exclusively for the GMAT and GRE, with over 20 years of experience.
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.

As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.

For more information, please email me (Mitch Hunt) at [email protected].
Student Review #1
Student Review #2
Student Review #3
Join the discussion