Mathematics · Time and Work
A can complete a work in 14 hours. B can complete the same work in 21 hours. A started working alone. After how many hours should B join A so that the entire work is completed in 10 hours?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 13.5 hours
- 24 hours✓
- 33 hours
- 44.5 hours
Correct answer
4 hours
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