Mathematics · Time and Work
A can complete a piece of work alone in 20 days, while B can do it alone in 30 days. They worked together for 5 days and left. The rest of the work is completed by C alone in 7 days. In what ratio should the payment be divided among them?
- 12 : 6 : 9
- 21 : 8 : 9
- 33 : 2 : 7✓
- 44 : 5 : 6
Correct answer
3 : 2 : 7
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