Mathematics · Time and Work
A alone can complete a piece of work in 9 days more than (A + B) working together, and B alone can complete the same work in 36 days more than (A + B) working together. In how many days can A and B together complete the work?
- 115 days
- 221 days
- 312 days
- 418 days✓
Correct answer
18 days
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