Mr. A can do a particular work in 6 hours, and Mr. B can do the same work in 12 hours. How much time will it take if they do the work together?
- 6 hours
- 8 hours
- 4 hours
- 5 hours
- None of these
Explanation
In 1 hour, A can do 1/6th of the work
In 1 hour, B can do 1/12th of the work
In 1 hour, Both A & B work
3/12 + 1/4
Answer: 4 hours
SH14-8-2023
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