A sustainable construction project aims to achieve 75% construction waste diversion from landfills. If the project generates 200 tons of waste total, how many tons must be diverted?
Correct Answer
B) 150 tons
75% diversion means 75% of the total waste must be recycled or reused. 200 tons × 0.75 = 150 tons must be diverted from landfills.
Why This Is the Correct Answer
Option C is correct because waste diversion percentage is calculated by multiplying the total waste by the diversion rate. When a project aims for 75% diversion of 200 tons total waste, the calculation is straightforward: 200 tons × 0.75 = 150 tons. This means 150 tons must be recycled, reused, or otherwise diverted from landfills, while only 50 tons (25%) can go to landfills.
Why the Other Options Are Wrong
Option A: 175 tons
125 tons represents only 62.5% diversion (125 ÷ 200 = 0.625), which falls short of the required 75% diversion target.
Option C: 125 tons
175 tons represents 87.5% diversion (175 ÷ 200 = 0.875), which exceeds the stated 75% target and would be unnecessarily costly to achieve.
Memory Technique
Remember 'Three-quarters rule': 75% = 3/4, so take 3/4 of any total. For 200 tons: 200 ÷ 4 = 50, then 50 × 3 = 150 tons diverted.
Reference Hint
Florida Building Code Chapter 4 - Special Detailed Requirements Based on Use and Occupancy, Green Building Standards section, or LEED reference materials for waste management requirements
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