Question

a can do a certain work in the same time in which b and c together can do a and b together could do it in 10 days and C alone in 50 days then B alone could do it in​

Answer 1

A can do a certain work in the same time in which B and C together can do it. If A and B together could do it in 10 days and C alone in 50 days, then B alone could do it in: A. So, B alone could do the work in 25 days.