Question

janaki and Janu can do a piece of work in 8 days. janaki alone can do it in 12 days. how long would Janu take to do the same work?

Answer 1

Hang will take 4.8days alone to complete the same work.

Answer 2

Janaki + janu :

Take 8 days to finish the work

⇒ 1 day, they can do 1/8 of the work

Janaki alone:

Takes 12 days to finish the work

⇒ 1 day, he can do 1/12 of the work

Janu alone:

1 day, he can do 1/8 - 1/12 = 1/24 of the work

Number of days needed = 24 days

Answer; Janu would take 24 days to finish the work alone.