- A120
- B66
- C54
- D60
Step-by-Step Solution
Workers and days are in inverse proportion, so the product is constant: worker-days. (Then 5 workers take days.)
Answer: D) 60
4 workers take 15 days to finish a job. To solve for how long 5 workers take, the FIRST correct step is to find the constant product. What is that constant (in worker-days)?
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