Each S and T can individually finish a work in 50 days. They worked together for 20 days and then left the work. How much of the work is left?

Each S and T can individually finish a work in 50 days. They worked t

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

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Each S and T can individually finish a work in 50 days. They worked together for 20 days and then left the work. How much of the work is left?

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