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Test Index
Ratio and Proportion Practice Test 1
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© examsnet.com
Question : 3
Total: 40
Thirty-six litres of mixture contains 25% alcohol and the rest water. If 5 litres of water is added with it, the percentage of alcohol in the new mixture would be:
20%
21
39
41
%
18%
19%
Cannot be determined
Validate
Solution:
👈: Video Solution
Alcohol in 36 litres of mixture = 25% of 36 litres = 9 litres
Quantity of water in the mixture = (39 - 6) litres = 27 litres
New quantity of mixture = (36 + 5) litres
Quantity of alcohol = 9 litres
Percentage of alcohol in the new mixture
=
9
41
×
100
%
=
21
39
41
%
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