Question
The perimeter of the rectangular base of a tank is 320 cm. The ratio of its length to its breadth is 3 : 1. When 54 ℓ of water are poured into the tank, 35 of it is filled. Find the height of the tank.
4 m

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The perimeter of the rectangular base of a tank is 320 cm. The ratio of its length to its breadth is 3 : 1. When 54 ℓ of water are poured into the tank, 35 of it is filled. Find the height of the tank.