hard · GMAT Quant
Worker A is twice as efficient as worker B. A works alone on a project for 4 days, after which B joins and the two of them work together for 4 more days, completing the entire project.
How many days would worker B alone have needed to complete the entire project?
- 8 days
- 10 days
- 16 days
- 20 days
- 24 days
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