Question

A is three times more efficient worker than b and is ,therefor,able to complete a work in 60 days earlier. The number of days , that a and b together will take to complete the work is

Answer 1

A is 30% more efficient than B : A + 0.3A =1.3A

Work done by A in one day: 1/23

Work done by B in one day: 1/(1.3*23) = 1/29.9

Work done by A+B in one day: 1/23 + 1/29.9 = 1/13

If both of them worked together, it would take them 13 days.