In a mixture of 60 liters, the ratio of milk and water is 2:1. What amount of water must be added to make the ratio of milk and water as 1:2?
Pick:
A) 76 liters  B) 86 liters  C) 60 liters  D) 34 liters  E) 18 liters
2:1 --- 60   1:2   2:4   ---------------   3   3 ----------- 60   3 ----------- ? =&gt; 60 liters   Answer:60 liters
<result>C</result>
In a mixture of 60 liters, the ratio of milk and water is 2:1. What amount of water must be added to make the ratio of milk and water as 1:2?