A school produces $80$ kg of waste each week. If it reduces waste by $20$ through recycling, how much waste remains each week?

Step-by-step solution

1. Find $20$ of $80$ kg: $0.20\times 80=16$ kg.
2. Subtract from total: $80-16=64$ kg.
3. The remaining waste is 64 kg.

Concept tested: Recycling impact

Published 4 October 2026 · How this solution was prepared and checked