A can complete a certain job in 16 days. B is 60% more efficient than A. In how many days can B complete the same job? Pick one: A) 6 B) 6.25 C) 7 D) 7.5 E) 10

Rationale: let , total work unit = 160 units a can finish in 16 days = 160 unit work i . e . a can finish in 1 days = 10 unit work i . e . b can finish in 1 days = 10 + ( 60 / 100 ) * 10 = 16 unit work days in which b will complete the work alone = 160 / 16 = 10 days answer : option e
Answer: E