Question

A and B together can complete a work in 8 days. B and C together can complete the same work in 12 days.if A alone can do that work in 16 days then how long would it take for A and C together to complete that work ?​

Answer 1

A, B and C can do a given piece of work in 6 days. Hence, A and C together complete the work in 8 day. Similary it is 48/12 = 4 work for B & C and 48/6 = 8 work for A & B & C together. So, (A+B+C) - (A+B) = 4 work which is done by A alone.