8 identical 6-cm cubes are placed in an empty rectangular container of length 76 cm and width 23 cm. The container is then filled with water from a tap flowing at a rate of 6 litres per minute. It takes 11 minutes to fill up ¹₂ of the container. What is the height of the container? Correct your answer to 1 decimal place.
Volume of 1 cube
= 6 x 6 x 6
= 216 cm³ 

Volume of 8 cubes
= 8 x 216
= 1728 cm³ 

1 ℓ = 1000 mℓ
6 ℓ = 6000 mℓ

Volume of water in the container
= 11 x 6000
= 66000 mℓ

Volume of ¹₂ of the container
= 66000 + 1728
= 67728 mℓ

Volume of the container
= 67728 ÷ ¹₂
= 67728 x ²₁
= 135456 mℓ

Base area
= 76 x 23
= 1748 cm² 

Height of the container
= 135456 ÷ 1748
≈ 77.5 cm

Answer(s): 77.5 cm