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14 Mar 2023, 01:30
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Difficulty:
45%
(medium)
Question Stats:
72% (01:51) correct
28%
(02:14)
wrong
based on 237
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By weight, liquid A makes up 7.0 percent of solution I and 14.5 percent of solution II. If 3 grams of solution I is mixed with 2 grams of solution II, then liquid A accounts for what percent of the weight of the resulting solution?
(A) 6.09%
(B) 10%
(C) 10.75%
(D) 21.5%
(E) 50%
(A) 6.09%
(B) 10%
(C) 10.75%
(D) 21.5%
(E) 50%
14 Mar 2023, 11:45
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Let liquid A account for x percent of the weight of the resulting solution. Note that x must have value between 7% and 14.5%
From the given information
3/2 = (14.5-x)/(x-7)
On solving we get x = 10%
Answer B
Posted from my mobile device
From the given information
3/2 = (14.5-x)/(x-7)
On solving we get x = 10%
Answer B
Posted from my mobile device
26 Mar 2023, 00:44
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(7/100)*3 + (14.7/100)*2 = (x/100)*5
0.21 + 0.29 = 0.05x
0.5 = 0.05 x
i.e, x = 10%
0.21 + 0.29 = 0.05x
0.5 = 0.05 x
i.e, x = 10%
