A and B together can do a work in 12 days. B alone can finish it in 30 days. In how many days can A alone finish the work?
A18 days
B20 days
C22 days
D25 days
Explanation
A’s 1-day work = (1/12) – (1/30) = (5 – 2) / 60 = 3 / 60 = 1 / 20. A takes 20 days.
Exam Relevance
- Topic: Work and Time
- Subtopic: Individual Work
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