A LEED project diverts 85% of construction waste from landfills. If the total waste generated is 240 tons, how many tons were diverted?
Correct Answer
B) 204 tons
85% of 240 tons = 0.85 × 240 = 204 tons diverted from landfills. This calculation determines the actual tonnage diverted, which is important for LEED Materials and Resources credits.
Why This Is the Correct Answer
To calculate waste diverted, multiply the total waste by the diversion percentage: 240 tons × 0.85 = 204 tons. This represents 85% of the total construction waste that was diverted from landfills. LEED Materials and Resources credits require accurate tracking of waste diversion rates, making this calculation essential for project compliance and documentation.
Why the Other Options Are Wrong
Option A: 216 tons
216 tons represents 90% of the total waste (240 × 0.90), not 85%. This error occurs when using the wrong percentage in the calculation, possibly confusing different LEED waste diversion thresholds.
Option C: 196 tons
196 tons would represent approximately 81.7% diversion (196 ÷ 240), which is less than the stated 85%. This incorrect result might come from calculation errors or misunderstanding the percentage conversion.
Option D: 228 tons
228 tons represents 95% of the total waste (240 × 0.95), which exceeds the stated 85% diversion rate. This error suggests using an incorrect percentage value in the calculation.
Memory Technique
Remember 'LEED Diverts': Landfill Elimination = Existing Diversion × Total. For 85%, think '85 cents of every dollar' - multiply total by 0.85 to get diverted amount.
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