X can do a piece of work in 40 days. He works at it for 8 days and then Y finished it in 16 days. How long will they together take to complete the work?
A. days
B. 15 days
C. 20 days
D. 26 days
Answer:A
X can do a piece of work in 40 days. He works at it for 8 days and then Y finished it in 16 days. How long will they together take to complete the work?
A. days B. 15 days C. 20 days D. 26 days