Question

A and B together finish a work in 30 days. They worked at it for 20 days and then B left. The remaining work was done by A alone in 20 more days. A alone can finish the work in how long?​

Answer 1

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Answer 2

Answer:

Work done by Q and B together in one day =1/30

A+B =1/30-->B =1/30 - A

A and B work together for 20 days + A alone completed the remaining work in 20 days = whole work

(A+B)20+ (A)20 =1

40A+20(1/30-A)=1

20A=1-20/30

20A=10/30

A=1/60

A alone cane finish the work in 60 days