A cylindrical dispenser of capacity 5.2 ℓ was filled with peach juice to its brim. The peach juice in the dispenser was then dispensed into a cubical container of sides 18 cm, through a tap flowing at a rate of 201 mℓ /min. After 19 min, the tap was turned off and the container was
34 full.
- What percentage of the peach juice in the cylindrical dispenser was left? Round off your answer to the nearest 2 decimal places.
- How many litres of peach juice were there in the container at first? (1 ℓ = 1000 cm3)
(a)
Volume of peach juice that was dispensed
= 201 x 19
= 3819 mℓ
1 ℓ = 1000 mℓ
3.819 ℓ = 3819 mℓ
Volume of peach juice Left in the dispenser
= 5.2 - 3.819
= 1.381 ℓ
Percentage of peach juice Left in the dispenser
= 1.381 ÷ 5.2 x 100
= 26.557692307692%
≈ 26.56% (to 2 decimal places)
(b)
Amount of peach juice in the container in the end
= 34 x 18 x 18 x 18 = 4374 cm
3
Amount of peach juice in the container at first
= 4374 - 3819
= 555 cm
3 1000 cm³ = 1 ℓ
555 cm
3 = 0.555 ℓ
Answer(s): (a) 26.56%; (b) 0.555 ℓ