8 workers need 9 days for a job. How many days would 6 workers need at the same pace?
Answer and explanation
Correct answer: A. 12
- Step 1: Total work = 8 x 9 = 72 worker-days. Step 2. 72 / 6 = 12 days. Answer: 12. Why not the others: 6.75: direct proportion was used instead of inverse. 11: the numbers were added and subtracted. 3.375: an extra factor of 2 was applied.
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