A can do a piece of work in `80` days.He works at it for `10` days and then `B` alore finishes the remaining work in `42` days.How long will `B` take to do the entire work alone?

Vaibhav can do a piece of work in 60 days. He works there for 15 days and then Sandeep alone finishes the remaining work in 30 days. In how many days will Vaibhav and Sandeep working together finish the work?

A can do a piece of work in 80 days. A works for 10 days, then B complete the remaining work in 42 days. In how many days will (A + B) do this work together

A can do a piece of work in 34 days. He worked for 14 days and then left. B completed the remaining work in 30 days. In how many days can B alone complete the work?