# A can do 50% more work as B can do in the same time. B alone can do a piece of work in 20 hours. A, with help of B, can finish the same work in how many hours ?

 [ A ]    12 [ B ]    8 [ C ]    13$1 \over 3$ [ D ]    5$1 \over 2$ [ E ]    47$1 \over 2$
 Answer : Option B Explanation :