Some masons promised to do a work in 10 days but 8 of them were absent and remaining did the work in 18 days. What was the original number of masons?
Let original number of masons = $$x$$
Using, $$M_1D_1=M_2D_2$$
=> $$x\times10=(x-8)\times18$$
=> $$10x=18x-144$$
=> $$18x-10x=144$$
=> $$x=\frac{144}{8}=18$$
$$\therefore$$ Original number of masons = 18
=> Ans - (D)
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