Mathematics · Time and Work
P can do a piece of work in 30 days and Q can do the same work in 40 days. They worked together for 5 days and then Q left. How much time will P, working alone, take to complete the remaining work?
- 121 days 6 hours✓
- 221 days 18 hours
- 321 days 12 hours
- 420 days 6 hours
Correct answer
21 days 6 hours
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