LIC AAO Model Paper 6

Question : 51 of 160

Marks: +1, -0

When one litre of water is added to a mixture of acid and water, the new mixture contains 20% acid. When one litre of acid is added to the new mixture, then the resultingmixture contains 33

1/3

% acid. The percentage of acid in the original mixture was

20%
22%
24%
25%
None of these

Validate

Solution:

If there be 1 litre of acid in 4 litres of mixture, then in case I.
Percentage of acid
=

1/{4+1}

× 100 = 20%
Case II,
Percentage of acid =

2/6

× 100 =

{100}/3

= 33

1/3

%
∴ Percentage of acid in original mixture = 25%

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