Mathematics · Time and Work
P, Q and R can complete a work individually in 10 days, 20 days and 30 days, respectively. How soon can the work be completed if P is assisted by Q and R on alternate days, starting with Q on the first day?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 16 days
- 25 days
- 39 days
- 47 days✓
Correct answer
7 days
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