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Question

How many ml of water must be added to 48 ml of alcohol to make a solution that contains 25% alcohol?
  1. 48
  2. 64
  3. 144
  4. 192

A
144
B
48
C
64
D
192
Solution
Verified by Toppr

The correct option is C 144
48 ml of alcohol contains 100% alcohol
When water is added to alcohol, it contains 0% alcohol
By applying method of allegation
1:3
1 unit of alcohol =48ml
3 unit of alcohol =48×3=144ml


950157_514748_ans_c3959cff1d144f138992f62a639f6138.PNG

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