Grade 10 · Science
Compare process designs using output and waste
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Only desired product and one recorded waste stream are shown; other material is not listed. Process A: 94 g desired product; 2 g recorded waste. Process B: 97 g desired product; 9 g recorded waste. Process C: 99 g desired product; 11 g recorded waste.
These controlled model trials use the same input amount. The process must make at least 95 g of desired product. Which eligible process has the least recorded waste?
- Process B
- Choose only the largest product amount.
- Process A
- Process C
See the answer & why
Process B
First keep processes making at least 95 g. Among them, Process B has the smallest recorded waste. Other costs or hazards would require additional criteria.
A little hint: Apply the product requirement first, then compare the stated waste measure.
Keep the input basis and measurement method consistent when comparing process trials.
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