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17 Feb 2020, 08:30
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Difficulty:
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84% (01:46) correct
16%
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wrong
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Solutions A, B, C, and D contain 20%, 40%, 50%, and 100% alcohol respectively. The four solutions are mixed in a proportion of 1:2:3:4 respectively. What will be the percentage of alcohol in the resultant solution?
A. 45%
B. 50%
C. 55%
D. 65%
E. 75%
A. 45%
B. 50%
C. 55%
D. 65%
E. 75%
17 Feb 2020, 08:41
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Approach:
Assume all 4 solution be in ratio: 1x:2x:3x:4x or take a simple case x = 1L(1000ml).
Each solution composition(in ml) of alcohol / non-alcohol would be:
A: 200/800
B: 800/1200
C: 1500/1500
D: 4000/0
Total Alcohol/Non-Alcohol Composition: 6500/3500
percentage of alcohol in the resultant solution: 65%
Option D
Assume all 4 solution be in ratio: 1x:2x:3x:4x or take a simple case x = 1L(1000ml).
Each solution composition(in ml) of alcohol / non-alcohol would be:
A: 200/800
B: 800/1200
C: 1500/1500
D: 4000/0
Total Alcohol/Non-Alcohol Composition: 6500/3500
percentage of alcohol in the resultant solution: 65%
Option D
