A vessel is full of mixture of spirit and water in which there is 20 per cent of spirit 5 litres are...........

Quantitative Aptitude ( CCS) Mixture and Alligation

A vessel is full of mixture of spirit and water in which there is 20 per cent of spirit. 5 litres are drawn off and the vessel is filled up with water. If the spirit is now 12 %, find the total quantity in the vessel (in ltrs).

12.5

7.2

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Explanation:

Let the total mixture be x liters.
It contains 20 % spirit i.e.0.2 of the total mixture.

When 5 liters are drawn off, quantity of spirit removed = 0.2(5) = 1 liters.
Remaining spirit = 0.2x –1.
Also remaining spirit = 0.12x. ∴ 0.2x - 1 = 0.12x ⇒ x = 12.5L.

Hence, option 2 is the correct answer.

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