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 one: A) 65 liters B) 68 liters C) 60 liters D) 26 liters E) 27 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?