"A can do a work in 15 days and B in 20 days. If they work on it together for
Channel: Doubtnut
Date: 2020-04-05

"A can do a work in 15 days and B in 20 days. If
 they work on it together for 4 days, then the fraction of the work that is
 left is
`1/4`
b. `1/(10)`
c. `7/1`
d. `8/(15)`"