S and T can finish a work in 50 days. They worked together for 20 days and then left. How much of the work is left?
A. 3/5
B. 1/3
C. 1/2
D. 2/5
Answer:A
S and T can finish a work in 50 days. They worked together for 20 days and then left. How much of the work is left?
A. 3/5 B. 1/3 C. 1/2 D. 2/5