A and B can do a piece of work in 30 days, while B and C can do the same work in

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โœช Choose the correct option.

A and B can do a piece of work in 30 days, while B and C can do the same work in 24 days and C and A in 20 days. They all work together for 10 days when B and C leave. How many days more will A take to finish the work?

18 days
24 days
30 days
36 days

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