Worker A takes 8 hours to do a job. Worker B takes 10 hours to do the same job. How long should it take, worker A and worker B, working together but independently, do the same job?

Worker A takes 8 hours to do a job. Worker B takes 10 hours to do t

1.	Worker A takes 8 hours to do a job. Worker B takes 10 hours to do the same job. How long should it take, worker A and worker B, working together but independently, do the same job?
A.	2 4/9 hours
B.	3 4/9 hours
C.	4 4/9 hours
D.	5 4/9 hours
Answer» D. 5 4/9 hours

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Worker A takes 8 hours to do a job. Worker B takes 10 hours to do the same job. How long should it take, worker A and worker B, working together but independently, do the same job?

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