A large cubical container of side 80 cm was filled with fruit juice up to 70% of its capacity. After 2 full jugs of fruit juice were removed from it, the level of fruit juice in the container dropped by
18 cm. The remaining fruit juice was then drained out through a tap found at the bottom of the container at a rate of 3 litres per min.
- How much fruit juice can each jug hold? Express your answer in cm3.
- How long would it take to completely drain the fruit juice from the container through the tap? Express your answer in min.
(a)
Capacity of 2 jugs
= 18 x 80 x 80 = 800 mℓ
Capacity of each jug
= 800 ÷ 2
= 400 mℓ
(b)
70% =
70100 =
710 Volume of the tank at 70% capacity
=
710 x 80 x 80 x 80
= 358400 cm
3 Volume of fruit juice to drain completely from the container
= 358400 - 800
= 357600 cm
3 1 ℓ = 1000 cm
3 3 ℓ = 3000 cm
3 Time taken to drain fruit juice
= 357600 ÷ 3000
= 119.2 min
Answer(s): (a) 400 mℓ; (b) 119.2 min