Mathematics · Time and Work
Working 6 hours a day, R1 can complete a piece of work in 18 days. Working 15 hours a day, R2 can complete the same work in 12 days. In how many days can both R1 and R2 together complete the same work by working 9 hours a day?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 110.5 days
- 27.5 days✓
- 38 days
- 49 days
Correct answer
7.5 days
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