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17 Oct 2025, 10:18
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
90% (01:02) correct
9% (02:07) wrong based on 11 sessions
History
Date
Time
Result
Not Attempted Yet
A boy is photocopying a rectangular poster. He sets the copier to increase the length of the poster by 30% and the width of the poster by 40%. The increase in the area of the poster is equal to x%. What is the value of x?
A. 68
B. 70
C. 75
D. 78
E. 82
A. 68
B. 70
C. 75
D. 78
E. 82
27 Oct 2025, 07:01
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Official Explanation
Let \(l\) and \(w\) be the poster ’s original length and width. When \(w\) is increased by 40%, the new width is \(1w + 0.40w = 1.4w.\) Similarly, the enlarged length equals \(1.3l\). This makes the new area \(1.4w × 1.3l = 1.82lw\). Compared to the original area, lw, the change is
Answer: E
GMAT-Club-Forum-36xjnxdj.png [ 11 KiB | Viewed 227 times ]
Let \(l\) and \(w\) be the poster ’s original length and width. When \(w\) is increased by 40%, the new width is \(1w + 0.40w = 1.4w.\) Similarly, the enlarged length equals \(1.3l\). This makes the new area \(1.4w × 1.3l = 1.82lw\). Compared to the original area, lw, the change is
Answer: E
Attachment:
GMAT-Club-Forum-36xjnxdj.png [ 11 KiB | Viewed 227 times ]
