A, B and C can complete a piece of work in 24,5 and 12 days respectively. Working to gether, they will complete the same work in :

A, B and C can complete a piece of work in 24,5 and 12 days respectively. Working to gether, they will complete the same work in :
1). $\frac{7}{24}$ days
2). $3\frac{1}{13}$ days
3). 4 days
4). $\frac{1}{24}$ days

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