Mathematics · Time and Work
If 30 men working 7 hours a day can complete a piece of work in 18 days, in how many days will 21 men working 9 hours a day complete the same work?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 116 days
- 218 days
- 321 days
- 420 days✓
Correct answer
20 days
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