Question

A can do a piece of work in 39 days and B is 30% more efficient than A. In how
many days can B finish it?​

Answer 1

Number of days A need = 39 days

Number of days B need

= 30% of 39 + 39

= 130 % of 39

= 130/100 × 39

= 50.7

≈ 51 days