A cistern in the shape of a cuboid is 3 m long, 2 m wide and 1.5 m deep, and it is full of water. A pump empties it at a steady 60 litres per minute. How many minutes does it take to empty the cistern completely?

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Accepted Answer

150. Volume = 3 × 2 × 1.5 = 9 m³. Since 1 m³ = 1000 litres, the cistern holds 9000 litres. Time = 9000 ÷ 60 = 150 minutes.

A cistern in the shape of a cuboid is 3 m long, 2 m wide and 1.5 m deep, and it is full of water. A pump empties it at a steady 60 litres per minute. How many minutes does it take to empty the cistern completely?

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