Jar X is 1/2 full of water. Jar Y, which has half the capacity of Jar X, is 1/2 full of water. If the water in Jar Y is poured into Jar X, then Jar X will be filled to what fraction of its capacity?  Pick
A) 3 / 4
B) 5 / 6
C) 7 / 8
D) 5 / 8
E) 7 / 12

Rationale: let p be the capacity of jar x . the amount of water in jar y is 1 / 2 * p / 2 = p / 4 then the total amount in jar x is p / 2 + p / 4 = 3 p / 4 the answer is a .
Answer: A