Matematika

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An empty rectangular tank us being filled with water from Tap A at 1 litre per minute. Tap B drains water out from the tank at 800 cm3 per minute. How long will it take for the water level to reach a height of 10 cm if both the taps are turned on at the same time?
An empty rectangular tank us being filled with water from Tap A at 1 litre per minute. Tap B drains water out from the tank at 800 cm3 per minute. How long will

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