Mathematics · Time and Work
When P and Q work together with their original efficiencies, they can complete a job in 10d hours. However, if P works with 150% of his original efficiency and Q works with 75% of his original efficiency, they can complete the same job together in 8d hours. If P alone can complete the job in 20 hours, and R alone can complete the job in 10 hours less than Q, then in what time will P and R together complete the job?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 113.2 hours
- 210 hours
- 39.6 hours✓
- 415 hours
Correct answer
9.6 hours
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