A and B working together can complete a work in \D\ days . Working alone A takes (8+d) days and B takes (18+d) days to complete the same work. A works for 4 days , so the remaining work will be completed by B alone in how many days ??
B is twice efficient as A and A can do a piece of work in 15 days. A started the work an after a few days B joined him . They completed the work in 11 days , from the starting .For how many days did they work together ?
A and B can do a piece of work in 24 days .A works for 8 days alone and the remaining work is done by B alone in 18 days . Find how many days B alone can complete 3 times the total work, working with 75?ficiency?