P can do a work in 10 days. Q can do the same work in 15 days. If they work together for 5 days, how much of the work they complete?
A. 1/2
B. 2/3
C. 1/3
D. 5/6
Answer:D
P can do a work in 10 days. Q can do the same work in 15 days. If they work together for 5 days, how much of the work they complete?
A. 1/2 B. 2/3 C. 1/3 D. 5/6