A small town’s wastewater treatment plant can treat 1200 m³ of wastewater per day. During a week of 6 days, it operates at an average utilisation of 65 %. What is the total volume of wastewater treated in that week?
Answer
4680 m³
The correct answer is 4680 m³ — Total treated volume for 6 days = 780 × 6 = 4680 m³.
Step-by-step solution
- Daily treatment capacity = 1200 m³.
- Utilised capacity per day = 1200 × 0.65 = 780 m³.
- Total treated volume for 6 days = 780 × 6 = 4680 m³.
Common mistake: Multiplying utilisation with total capacity instead of daily capacity before multiplying by days
Concept tested: Utilisation calculation
Published · How this solution was prepared and checked
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