Question

10 person can fill up a water tank in 24 hours how many person are needed to fill up it in 5 hour

Answer 1

this is a case of inverse proportion
so,
xy = XY
10*24= 5*y
240 by 5=
48
hence the answer is 48 people are required
hope it helps you......

Answer 2

10 persons do the work ⇒ each person do's a work of W/10

⇒ 1 person do's a work of W/10 in 24 hours

⇒ 1 person do's a work of W/240 in one hour

if we need to complete the work in five hours then each hour W/5 work should be done.

⇒ 1 person do's a work of W/240 in one hour

48 persons are required to do a work of W/5 in one hour

⇒ 48 persons fill the tank in 5 hours