Question

X and y together can completework in 12 days if y work only for half a day daily then how many days x and y together completethe work

Answer 1

A and B together can complete the piece of work in one day=1/12

A can complete the piece of work in one day=1/20

B can alone complete the piece of work in one day=1/12–1/20

LCM(12,20)=60

=>(5–3)/60=2/60=1/30

Therefore days require to complete the work=1÷1/30=1×30=30days

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