A large cubical container of side 80 cm was filled with fruit juice up to 80% of its capacity. After 2 full jugs of fruit juice were removed from it, the level of fruit juice in the container dropped by
12 cm. The remaining fruit juice was then drained out through a tap found at the bottom of the container at a rate of 2 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
= 12 x 80 x 80 = 3200 mℓ
Capacity of each jug
= 3200 ÷ 2
= 1600 mℓ
(b)
80% =
80100 =
45 Volume of the tank at 80% capacity
=
45 x 80 x 80 x 80
= 409600 cm
3 Volume of fruit juice to drain completely from the container
= 409600 - 3200
= 406400 cm
3 1 ℓ = 1000 cm
3 3 ℓ = 2000 cm
3 Time taken to drain fruit juice
= 406400 ÷ 2000
= 203.2 min
Answer(s): (a) 1600 mℓ; (b) 203.2 min