A can do a work in 24 days and B can do it in 16 days. In how many days A and B can do the work?  Choose the most appropriate option:  A) 20 days  B) 10 days  C) 6 days  D) 9 3/5 days  E) 7 days
Explanation:   A's 1day's work = 1/24   B's 1day's work = 1/16   They work together = 1/24 + 1/16 = 5/48 = 48/5 = 9 3/5days   Answer: Option 9 3/5 days
<result>D</result>
A can do a work in 24 days and B can do it in 16 days. In how many days A and B can do the work?