Question

A mixture of 40 liters of milk and water contains 10% water. How much water should be added to this so that water may be 20% in the new mixture ?

• A. 6.5 liters
• B. 5 liters
• C. 4 liters
• D. 7.5 liters

Answer 1

The correct option is B 5 liters

Required quantity of water
$=\frac{40\times (90-80)}{80}=\frac{40\times 10}{80}$
$=5$ liters

The correct answer is $=5$ liters