Two persons A and B can do a piece of work alone in 10 days and 15 days respectively. If A works for 2 days and B works for 5 days, find the total amount of work done.

Two persons A and B can do a piece of work alone in 10 days and 15 day

1.	Two persons A and B can do a piece of work alone in 10 days and 15 days respectively. If A works for 2 days and B works for 5 days, find the total amount of work done.
A.	2/7
B.	8/15
C.	7/15
D.	11/15
Answer» C. 7/15