P, Q and R can do a piece of work in 24 days, 30 days and 40 days respectively. They start the work together but R leaves days before the completion of the work. In how many days is the work done?

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Accepted Answer

11 days

P, Q and R can do a piece of work in 24 days, 30 days and 40 days respectively. They start the work together but R leaves days before the completion of the work. In how many days is the work done?

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