Question

A and B can do a work in 21 days, A is (7/4) times as

Q: A and B can do a work in 21 days, A is (7/4) times as efficient as B. In how many days, A alone can

LetefficiencyofBbe4unitsdayEfficiencyofA4times747unitsdayWeknowTotalworkEfficiencytimesTimetakenTotalwork74times21231units1003ofthetotalwork231times10030077unitsAalonecancomplete1003oftheworkin77711days

efficient as B. In how many days, A alone can complete the (100/3)% of the work?

A 13

B 22

C 11

D 17

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A and B can do a work in 21 days, A is (7/4) times as

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