Question 114

If 12 men working 8 hours a day complete the work in 10 days, how long would 16 men working 7 1/2 hours a day take to complete the same work ?

Solution

Using, $$M_1D_1H_1$$ $$=M_2D_2H_2$$, where $$M$$ is number of men, $$D$$ is number of days and $$H$$ is number of hours

According to ques,

=> $$12\times10\times8=16\times D_2\times\frac{15}{2}$$

=> $$120=15D_2$$

=> $$D_2=\frac{120}{15}=8$$

=> Ans - (A)

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