115 liters of a mixture of milk and water contains in the ratio 3:2. How much water should now be added so that the ratio of milk and water becomes 3:4?
Choose the correct choice from the following answers.
A) 12 liters	B) 32 liters	C) 46 liters	D) 50 liters	E) 34 liters

Rationale: "milk = 3 / 5 * 115 = 69 liters water = 46 liters 69 : ( 46 + p ) = 3 : 4 138 + 3 p = 276 = > p = 46 46 liters of water are to be added for the ratio become 3 : 4 . answer : c"
Answer: C