A tap fills an empty rectangular tank at a rate of 8 litres per minute. The tank measures 60 cm long, 50 cm wide and 40 cm tall. How long will the tap take to fill the tank completely? (1 litre = 1 000 cm³)
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Worked Solution
Step 1: Find the volume of the tank in cm³.
60 × 50 × 40 = 120 000 cm³
Step 2: Convert cm³ to litres.
120 000 ÷ 1 000 = 120 litres
Step 3: Find the time to fill the tank.
Time = volume ÷ flow rate = 120 ÷ 8 = 15 minutes
The tap will take 15 minutes to fill the tank completely.
Correct answer: 15 minutes
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