Question
Water is leaking from a tank measuring 150 cm by 50 cm by 90 cm at a rate of 3.9 ℓ per minute. After 2 hours, the tank is empty. What was the depth of water in the tank at first?
2 m

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Water is leaking from a tank measuring 150 cm by 50 cm by 90 cm at a rate of 3.9 ℓ per minute. After 2 hours, the tank is empty. What was the depth of water in the tank at first?