A and B can together finish a work in 30 days. They worked for it for 20 days and then B left. The remaining work was done by A alone in 20 more days. Alone can finish the work in?
A. 48 days
B. 50days
C. 54 days
D. 60 days
Answer:D
A and B can together finish a work in 30 days. They worked for it for 20 days and then B left. The remaining work was done by A alone in 20 more days. Alone can finish the work in?
A. 48 days B. 50days C. 54 days D. 60 days