Question

if p and q both can complete a work in 21 days if q alone can complete it in 29 days how man days will p take to complete the work​

Answer 1

Step-by-step explanation:

Let p=1/x,

Givenp+q=1/21,q=1/29

1/x+1/29=1/21

1/x=1/21-1/29

1/x=29-21/29×21

1/x=8/29×21

1/x=8/609

p alone can complete a work in 609/8 (or)76.125 days