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A and B together complete a work in 8 days. If B is 25% more efficient than A, then in how many days will A alone complete the same work?

A12 days

B18 days

C24 days

D6 days

Answer:

B. 18 days

Read Explanation:

A+B = 8 days A/B=4/5 efficiency of A is 4 and efficiency of B is 5 so the efficiency of A&B is 4+5=9 total work is =9 x 8=72 A alone complete the same work = 72/4=18 days


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