Question

A can do a peice of work in 20 days which B can do alone in 12days B work at in 9 days A can finish remaning work in


chapter : direct and inverse proportion​

Answer 1

Answer:

★5days★

Step-by-step explanation:

B need 12 day to do 1 work

or, B need 1 day to do 1/12 work

or, B need 9 day to do 1*9/12 work

= 3/4 work

Remaining work, (1-3/4) = 1/4

A can do 1 work in 20 days

or, A can do 1/4 work in 20*1/4 days

= 5 days