Aptitude - Time and work - Discussion

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Q.

Worker A takes 8 hours to do a job. Worker B takes 10 hours to do the same job. How long should it take both A and B, working together but indepently, to do the same job?                         
A. A. 2x4/9 B. B. 4x4/9
C. C. 5x4/9 D. D. 4x2/9

Answer: Option B
Explaination:

 


Discussion

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