Archimedes drained the water in his tub. The amount of water left in the tub (in liters) as a function of time (in minutes) is graphed. Water (liters) 360- 320+ 280+ 240- 200- 160. 120- 80- 40- 1 2 3 Time (minutes) 5 Determine how many litres are drained in a single minute.

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