A rectangular container measuring 80 cm by 70 cm by 30 cm was ¹₆ filled with water. Elyse turned on a tap at 10.37 p.m. to fill more water into the container. She turned off the tap at 10.47 p.m. The container was ⁴₇ 
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
= ¹₆ x 80 x 70 x 30
= 28000 cm³

Volume of water in the container in the end
= ⁴₇ x 80 x 70 x 30
= 96000 cm³

Volume of water added into the container by the tap
= 96000 - 28000
= 68000 cm³

1000 mℓ = 1 ℓ
68000 mℓ = 68000 ÷ 1000 = 68 ℓ

From 10.37 p.m. to 10.47 p.m.: 10 min

Volume of water that flowed out of the tap in a minute
= 68 ÷ 10
= 6.8 ℓ 

Answer(s): 6.8 ℓ