How much more water must be added to the container to make 20 litres? Give the answer in ℓ and mℓ.
1 ℓ = 1000 mℓ
20 ℓ = 20 x 1000 = 20000 mℓ
Volume of water of each marking
= 20000 ÷ 10
= 2000 mℓ
Volume of water that must be added
= 3 x 2000
= 6000 mℓ
= 6 ℓ 0 mℓ
Answer(s): 6 ℓ 0 mℓ