The figure not drawn to scale shows a cubical tank which is
25 filled with water.
- What is the volume of water needed to fill up the tank to the brim?
- Water is added to the tank at a rate of 10 litres per minute. At this rate, how long will it take to fill the tank completely? Give your answer in this format. (Eg 1 h 20 min)
(a)
Fraction of water needed to fill the tank to the brim
= 1 -
25 =
35 Volume of water needed to fill the tank to the brim
=
35 x 100 x 100 x 100
= 600000 mℓ
1000 mℓ = 1 ℓ
600000 ÷ 1000 = 600 ℓ
(b)
Time needed to fill the tank completely
= 600 ÷ 10
= 60 min
60 min = 1 h
60 min = 1 h 0 min
Answer(s): (a) 600 ℓ; (b) 1 h 0 min