Question
A barrel can hold 21 ℓ of water. A pot can hold 11 more litres of water than the barrel. A container can hold 4 times as much water as the pot. If the container is 12 filled with water, how much more water is needed to fill the container completely?
4 m

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A barrel can hold 21 ℓ of water. A pot can hold 11 more litres of water than the barrel. A container can hold 4 times as much water as the pot. If the container is 12 filled with water, how much more water is needed to fill the container completely?