Discussion :: Time and Work
- A can do a piece of work in 10 days. He works at it for 4 days and then B finishes it in 9 days. In how many days can A and B together finish the work?
Answer : Option A
Explanation :
4/10 + 9/x = 1 => x = 15
1/10 + 1/15 = 1/6 => 6 days
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