"X can do a piece of work in 24 days. When he had worked for 4 days, Y
Channel: Doubtnut
Date: 2020-04-05

"X can do a piece of work in 24 days. When he had
 worked for 4 days, Y joined him. If complete work was finished in 16 days, Y
 can alone finish that work in 
`18\ d a y s`
b. `27\ d a y s`
c. `42\ d a y s`
d. `36\ d a y s`"