Bucket A is 1/4 full of sand, and Bucket B, which has one-half the capacity of Bucket A, is 3/8 full of sand. Jana pours the contents of Bucket B into Bucket A. Bucket A is now filled to what fraction of its capacity?  Choose the correct choice from the following options.
A) 3 / 8
B) 7 / 16
C) 1 / 2
D) 5 / 8
E) 7 / 8

Rationale: let capapcity of a = x sand = x / 4 capacity of b = x / 2 sand = 3 x / 16 a total = x / 4 + 3 x / 16 = 7 x / 16 answer : b
Answer: B