Question

72 men can build a small house in 30 days, working 8 hours a day. In how many days will 80 men, working 6 hours a day, complete the work?

• A. 35 days
• B. 36 days
• C. 37 days
• D. 38 days

Answer 1

The correct option is B

36 days

Let the required number of days to complete the work be $x$.

From productivity axiom, we know that

72 $\times$ 30 $\times$ 8 = 80 $\times$ 6 $\times$ $x$

$x$ = $\frac{72\times 30\times 8}{80\times 6}$

$x$ = 36 days