Drum X is 1/2 full of oil and drum Y, which has twice the capacity of drum X, is 1/3 full of oil. If all of the oil in drum X is poured into drum Y, then drum Y will be filled to what capacity? Select.
A) 2/3
B) 5/6
C) 7/12
D) 11/12
E) 17/24
(1/2)X = (1/4)Y   (1/4)Y + (1/3)Y = (7/12)Y   The answer is 7/12.
<result>C</result>
Drum X is 1/2 full of oil and drum Y, which has twice the capacity of drum X, is 1/3 full of oil. If all of the oil in drum X is poured into drum Y, then drum Y will be filled to what capacity?