Question

Question 41

If 45 persons can complete a work in 20 days, then the time taken by 75 persons will be___hours.

Answer 1

$\because$ 45 persons can complete a work in 20 days.
$\therefore$ 1 person can complete a work in $45\times 20$ i.e.900 days.
Similarly, 75 persons can complete the same work in $\frac{900}{75}=12$ days
$=12\times 24=288h[\because$ 1 day =24 h]