A is thrice as good a workman aa B and is, therefore, able to finish a piece of work in 60 days less than B.The time (in days) in which they can do it working together is

A is thrice as good a workman aa B and is, therefore, able to finish a piece of work in 60 days less than B.The time (in days) in which they can do it working together is
1). 22 days
2). $22\frac{1}{2}$ days
3). 23 days
4). $23\frac{1}{4}$ days

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