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PS · Problem Solving
705-805
percent
Tom and Aly purchased a laptop each at the same price. Both of them marked up the price of their laptops by the same amount. Aly sold her laptop by offering successive discounts of $200 and 20%, in that order; whereas Tom sold his laptop by offering the same scheme of discount but in reverse order. If the profit made by Aly was equal to the loss incurred by Tom, then what was the amount of profit (in $) made by Aly?
Answer Choices
Correct answer marked below$20
Correct
B
$25
C
$30
D
$35
E
$40
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Official Explanation
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Both had to reduce the marked price by $200.
The only difference lies in the fact that Aly, since she reduced the amount by 200 first, did not have to give a discount on it.
Whereas, Tom gave a 20% off on $200 too i.e. he reduced the price by an extra of …
The only difference lies in the fact that Aly, since she reduced the amount by 200 first, did not have to give a discount on it.
Whereas, Tom gave a 20% off on $200 too i.e. he reduced the price by an extra of …
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What it tests
Your ability to apply GMAT math concepts to solve a multi-step problem quickly and accurately. At the 705-805 level, accuracy and speed both matter.
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Overcomplicating the setup — most GMAT problems reward a direct, organized approach over brute calculation.
Related GMAT Topic Guides
Quant
TopicGMAT Quantitative Reasoning
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Difficulty
705-805
Type
PS
Category