A is thrice as 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 as 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). 24 ½ days

B). 23 ½ days

C). 22 ½ days

D). 21 ½ days

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