Anil can do a work in 15 days while Sunil can do it in 25 days. How long will they take if both work together?	Choose the correct choice from the following answers:  A) 9 3/9  B) 9 3/7  C) 9 3/8  D) 9 3/2  E) 9 3/1
1/15 + 1/25 = 8/75   75/8 = 9 3/8 days   Answer:9 3/8
<result>C</result>
Anil can do a work in 15 days while Sunil can do it in 25 days. How long will they take if both work together?