Question

A swimming pool is 40 m by 25 m by 5 m. Water flows into it at the rate of 25 m cube per minute. In what time pool be half filled

Answer 1

height * breadth * length = 5*25*40

= 125*40= 5000m³ (volume)

1/2*5000 = 2500m³

speed = 25m³ per 60 sec = 5/12 m³ per sec

distance = 2500m³

time=distance / speed

= 2500 *60/25

= 100*60= 6000 sec

= 100min = 1 hour and 40 mins

hope the answer is right