Question

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?

• A. 12 days
• B. 18 days
• C. 24 days
• D. 6 days

Answer 1

Answer:

B. 18 days

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