A rectangular container measuring 70 cm by 60 cm by 30 cm was ¹₃ filled with water. Zoe turned on a tap at 7.19 p.m. to fill more water into the container. She turned off the tap at 7.29 p.m. The container was ⁶₇ 
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
= ¹₃ x 70 x 60 x 30
= 42000 cm³

Volume of water in the container in the end
= ⁶₇ x 70 x 60 x 30
= 108000 cm³

Volume of water added into the container by the tap
= 108000 - 42000
= 66000 cm³

1000 mℓ = 1 ℓ
66000 mℓ = 66000 ÷ 1000 = 66 ℓ

From 7.19 p.m. to 7.29 p.m.: 10 min

Volume of water that flowed out of the tap in a minute
= 66 ÷ 10
= 6.6 ℓ 

Answer(s): 6.6 ℓ