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Updated on: 24 Dec 2014, 02:00
Originally posted by Gmatdecoder on 23 Dec 2014, 23:31.
Last edited by Bunuel on 24 Dec 2014, 02:00, edited 1 time in total.
Last edited by Bunuel on 24 Dec 2014, 02:00, edited 1 time in total.
Edited the question.
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Difficulty:
15%
(low)
Question Stats:
79% (01:38) correct
21%
(02:06)
wrong
based on 626
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Two brands of detergent are to be combined. Detergent X contains 20 percent bleach and 80 percent soap, while Detergent Y contains 45 percent bleach and 55 percent soap. If the combined mixture is to be 35 percent bleach, what percent of the final mixture should be Detergent X?
(A) 10%
(B) 32 1/2 %
(C) 35%
(D) 40%
(E) 60%
(A) 10%
(B) 32 1/2 %
(C) 35%
(D) 40%
(E) 60%
31 Dec 2014, 00:27
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Gmatdecoder
Best is the allegation method. Refer diagram below:
Attachment:
ble.png [ 5.86 KiB | Viewed 21082 times ]
X percentage \(= \frac{10}{25} * 100 = 40%\)
