A can do a work in 16 days and B can do it in 8 days. In how many days A and B can do the work? Choose the correct option:
A) 20 days B) 5 1/3 days C) 6 days D) 8 days E) 7 days
Explanation:   A's 1day's work = 1/16   5 1/3 days's 1day's work = 1/8   They work together = 1/16 + 1/8 = 3/16 = 16/3 = 5 1/3days   Answer: Option 5 1/3 days
<result>B</result>
A can do a work in 16 days and B can do it in 8 days. In how many days A and B can do the work?