If 4 men can reap a field in 5 days working 9 hours a day, in how many days can 10 men reap the same field working 6 hours a day?
As we know,Â
$$\frac{M_1\times\ D_1\times\ H_1}{W_1}=\frac{M_2\times\ D_2\times\ H_2}{W_2}$$
Here, M = number of persons enganged in work
D = Number of days
H = Number of hours
Given in question ,Â
4 men take 5 days working 9 hours a day to reap a field
$$\therefore\ \frac{4\times5\times9}{1}=\frac{10\times\ D_2\times\ 6}{1}$$
$$\therefore\ D_2=3\ days$$
Hence, Option C is correct.Â
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