Milk contains 5% water.What quantity of pure milk should be added to 10 litres of milk to reduce this to 2% ? Options
A) 5 litres  B) 7 litres  C) 15 litres  D) Cannot be determined  E) None of these
Here required quantity of pure milk = 10×(5−2)/2   = 10×3/2 = 15 litres.   Answer 15 litres
<result>C</result>
Milk contains 5% water.What quantity of pure milk should be added to 10 litres of milk to reduce this to 2% ?