Question

A rectangular tank has l =45 b =40 h= 35.If it contains 1/5th water presently and the rate of flowing water in it is 1.8 litre per minute. How much water is in the rectangular tank after 6 minutes?

Answer 1

l = 45 m b = 40 m h = 35 m
volume of rectangular tank is 45 × 40 × 35 = 63000 m cube
so the tank contain 63000 × 1000 = 63000000 litre
presently tank has 63000000 / 5 = 12600000 litre of water
water flows 1.8 litre per min
so in 6 min 1.8 ×6 = 10.8 liter of water flow
after 6 min 12600000 -10.8 =12599989.2 litre of water preset in the tank