9. What is the smallest possible sum of two positive integers whose product is 240 ?
A 30
B 31
C 32
D 34
E 38
9. B Since the product of the two positive integers is 240 , the possible pairs of integers are $(1,240)$, $(2,120),(3,80),(4,60),(5,48),(6,40),(8,30),(10,24),(12,20)$ and $(15,16)$. The respective sums of these pairs are $241,122,83,64,53,46,38,34,32$ and 31 . Of these, the smallest value is 31 .