LIC AAO 22 Mar 2015 Paper

Question : 31 of 160

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In a 120 litre mixture of milk and water, water is only 25%. The milkman sold 20 litres of this mixture and then he added 16.2 litres of pure milk and 3.8 litres of pure water in the remaining mixture. What is the percentage of water in the final mixture?

Validate

Solution:

20 litres of mixture is sold.
∴ In 100 litres of mixture,
Milk ⇒ 100 ×

{75}/{100}

= 75 litres
Water ⇒ 25 litres
After respective additions,
Water ⇒ 25 + 3.8 = 28.8 litres
Quantity of mixture = (75 + 16.2 + 28.8) litres = 120 litres Required percent
=

{28.8}{120}

× 100 = 24%

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