A alone can complete a work in 18 days. A and B together can complete the work in 10(2/7) days
A alone can complete a work in 18 days. A and B together can complete the work in 10(2/7) days. A and C together can complete the work in 12 days. At what time B and C together can complete 83(1/3)%of work? a) 18 days b) 12 days c) 15 days d) 20 days e) […]










