A household produces 12 kg of kitchen waste per week. If they start composting and reduce waste by 25%, how many kilograms of waste will be composted?
Answer
3 kg
The correct answer is 3 kg — The remaining 9 kg will be disposed differently.
Step-by-step solution
- Understand that a 25% reduction means 25% of the original quantity is composted.
- Calculate 25% of 12 kg: .
- Thus 3 kg of waste will be composted.
- The remaining 9 kg will be disposed differently.
Common mistake: Calculating the remaining waste instead of the composted amount
Concept tested: Waste reduction calculation
Published · How this solution was prepared and checked
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