Mathematics for IGCSE & O level - Rates (Section 2 - No. 16)
What is the average rate of flow if it takes 30 minutes to fill a tank with 1000 litres?
30 L/min
33.3 L/min
1000 L/min
2000 L/min
Explanation
1000 litres / 0.5 hours = 2000 litres/hour, then 2000/60 min = 33.33 litres/min
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