Question

Mark the correct alternative in the following question:

8 men can finish a piece of work in 40 days. If 2 more men join them, then the work will be computed in

(a) 30 days (b) 32 days (c) 36 days (d) 25 days

Answer 1

As, the number of days computed by 8 men to finish the piece of work = 40 days

$\Rightarrow$ The number of days computed by 1 man to finish the piece of work = 40 × 8 = 320 days

So, the number of days computed by 10 men to finish the piece of work = $\frac{320}{10}$ = 32 days

Hence, the correct alternative is option (b).

Note: This is the case of inverse variation. More men needs less time to finish the same work.