A can do a piece of work in 40 days and ...

A can do a piece of work in 40 days and B in 45 days.They work together for 10 days and then B goes away. In how many days will A finish the remaining work?

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A\ a n d\ B can do a piece of work in 20 days and 15 days. They work together for 2 days and then A goes away. In how many days will B finish the remaining work?

A can finish a piece of work in 15 days and B can do it in 10 days. They worked together for 2 days and then B goes away. In how many days will A finish the remaining work ?

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A can do a piece of work in 80 days and B in 100 days. They work together for first 20 days before B goes away. In how many days will A manage to finish the remaining work?

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A and B can do a piece of work in 45 days and 40 days respectively.They began the work together but A leaves after some days and B finishes the remaining work in 23 days. After how many days did A leave the work ?

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