²₅ of a rectangular tank, 80 cm by 30 cm by 22 cm, is filled with water. A cubical container of edge 24 cm is filled with water to a depth of 10 cm. If the water in the rectangular tank is transferred to the cubical container until it is filled to its brim, how many litres of water will be left in the rectangular tank?
Volume of water in the tank 
= ²₅ x 80 x 30 x 22
= 21120 cm³ 

Height increase of the cubical container in order to be filled to the brim
= 24 - 10
= 14 cm

Volume of water needed to be filled in the cubical container
= 24 x 24 x 14
= 8064 cm³ 

Volume of water left in the rectangular tank 
= 21120 - 8064
= 13056 cm³ 

1000 cm³ = 1 ℓ

13056 cm³ = 13056 ÷ 1000 = 13.056 ℓ

Answer(s): 13.056 ℓ