A mixture of 120 liters of wine and water contains 20% water. How much more water should be added so that water becomes 25% of the new mixture? Select:  A) 2 liters  B) 3 liters  C) 8 liters  D) 5 liters  E) 7 liters

Rationale: number of liters of water in 120 liters of the mixture = 20 % of 120 = 20 / 100 * 120 = 24 liters . p liters of water added to the mixture to make water 25 % of the new mixture . total amount of water becomes ( 24 + p ) and total volume of mixture is ( 120 + p ) . ( 24 + p ) = 25 / 100 * ( 120 + p ) 96 + 4 p = 120 + p p = 8 liters . answer : c
Answer: C