Milk contains 5% water.What quantity of pure milk should be added to 10 litres of milk to reduce this 2%?	Options.
A) 15 litres	B) 16 litres	C) 17 litres	D) 25 litres	E) 35 litres

Rationale: present ration of milk to water is 95 : 5 amount of milk is 10 litres hence , pure milk content is 9.5 litre and water content is 0.5 litres now , we should not disturb the water content so , 0.5 litres of water is equivalent to 2 % so 100 % mixture is : ( 0.5 / 2 ) * 100 = 25 litre thus , milk should be added = 25 - 10 = 15 litres of pure milk answer : a
Answer: A