In 20 days, A completes 80% of the task. He then summons B, and the two of them labour together for the next three days to complete the remaining tasks. How long would it take B to complete the project on his own?
A. 23 days
B. 37 days
C. 37 1/2 days
D. 40 days
Answer:C
In 20 days, A completes 80% of the task. He then summons B, and the two of them labour together for the next three days to complete the remaining tasks. How long would it take B to complete the project on his own?
A. 23 days B. 37 days C. 37 1/2 days D. 40 days