1.

If A and B together can finish a piece of work in 20 days B and C in 10 days and C and A in 12 days, then A, B, C jointly can finish the same work in1). $4\frac{2}{7}$ days2). 30 days3). $8\frac{4}{7}$ days4). $\frac{7}{60}$ days

Answer»

I THINK $8\frac{4}{7}$ DAYS is RIGHT



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