A is thrice good a workman as B and therefore is able to finish a job in 60 days less than B. Working together they can do it in?

A is thrice good a workman as B and therefore is able to finish a j

1.	A is thrice good a workman as B and therefore is able to finish a job in 60 days less than B. Working together they can do it in?
A.	20
B.	22 ½
C.	25
D.	30
Answer» C. 25

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A is thrice good a workman as B and therefore is able to finish a job in 60 days less than B. Working together they can do it in?

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