A rectangular container measuring 80 cm by 65 cm by 20 cm was ¹₁₀ filled with water. Fiona turned on a tap at 10.31 p.m. to fill more water into the container. She turned off the tap at 10.44 p.m. The container was ⁷₈ 
filled with water. Given that the water flowed out of the tap at the same rate, find the volume of water that flowed out of the tap in a minute. Give your answer in litres.
Volume of water in the container at first
= ¹₁₀ x 80 x 65 x 20
= 10400 cm³

Volume of water in the container in the end
= ⁷₈ x 80 x 65 x 20
= 91000 cm³

Volume of water added into the container by the tap
= 91000 - 10400
= 80600 cm³

1000 mℓ = 1 ℓ
80600 mℓ = 80600 ÷ 1000 = 80.6 ℓ

From 10.31 p.m. to 10.44 p.m.: 13 min

Volume of water that flowed out of the tap in a minute
= 80.6 ÷ 13
= 6.2 ℓ 

Answer(s): 6.2 ℓ