Question
A rectangular container is filled with water to a height of 9 cm. Its rectangular base measures 25 cm by 12 cm. When 9 litres of water are poured into the container, the water level rises to 35 of the height of the container. Find the height of the container.
3 m

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A rectangular container is filled with water to a height of 9 cm. Its rectangular base measures 25 cm by 12 cm. When 9 litres of water are poured into the container, the water level rises to 35 of the height of the container. Find the height of the container.