Mathematics · Time and Work
R and S together can complete a work in 60 days. S and T together can complete the same work in 90 days. If R, S, and T all work together, then the same work gets completed in 45 days. How many days will R and T together take to complete the same work?
- 175 days
- 280 days
- 350 days
- 460 days✓
Correct answer
60 days
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