Question

A can do a piece of work in 8 days, b can do it in 10 days and c can do it in 20 days. in how many days can a, b and c together complete the work?

Answer 1

answer is together they can do one work in 40/11 day .because according to the que
A can do 1/8 work in one day because they complete in 8days
B can do 1/10 work in one day because they complete in 10 day
C can do 1/20 work in one day because they complete in 20 day
so, 1/8+1/10+1/20=11/40 work they can do in one day together .
they completes one work in 40/11 day



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