A rectangular tank measuring 65 cm by 60 cm by 35 cm was ¹₁₀ filled with water. Hilda turned on a tap at 10.26 p.m. to fill more water into the tank. She turned off the tap at 10.39 p.m. The tank was ⁹₁₀ 
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 tank at first
= ¹₁₀ x 65 x 60 x 35
= 13650 cm³

Volume of water in the tank in the end
= ⁹₁₀ x 65 x 60 x 35
= 122850 cm³

Volume of water added into the tank by the tap
= 122850 - 13650
= 109200 cm³

1000 mℓ = 1 ℓ
109200 mℓ = 109200 ÷ 1000 = 109.2 ℓ

From 10.26 p.m. to 10.39 p.m.: 13 min

Volume of water that flowed out of the tap in a minute
= 109.2 ÷ 13
= 8.4 ℓ 

Answer(s): 8.4 ℓ