A can do a price of work in 30days while B can do it in 40 days. In how many days can A and B working together do it?
A. 70 Days
B. days
C. days
D. days
Answer:D
A can do a price of work in 30days while B can do it in 40 days. In how many days can A and B working together do it?
A. 70 Days B. days C. days D. days