Ravi can do a piece of work in 11 days while Prakash can do it in 22 days. In how many days will they finish it together?
Choose the correct choice from the following answers:  A) 5 7/3 days  B) 7 1/3days  C) 5 1/9 days  D) 5 7/3 days  E) 4 7/9 days
1/11 + 1/22 = 3/22   22/3 = 7 1/3 days   ANSWER:7 1/3days
<result>B</result>
Ravi can do a piece of work in 11 days while Prakash can do it in 22 days. In how many days will they finish it together?