X can do a piece of work in 'p' days and Y can do the same work in 'q' days . Then the number of days in which X and Y can together do that work is

X can do a piece of work in 'p' days and Y can do the same work in 'q'

1.	X can do a piece of work in 'p' days and Y can do the same work in 'q' days . Then the number of days in which X and Y can together do that work is
A.	p+q2
B.	1p+1q
C.	pqp+q
D.	Pq
Answer» D. Pq

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X can do a piece of work in 'p' days and Y can do the same work in 'q' days . Then the number of days in which X and Y can together do that work is

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