SOLUTION: a can finish a job in 3 hour and b can finish the same ob in 6 hours. how long will it take both of them working together to finish the job?
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Question 367053: a can finish a job in 3 hour and b can finish the same ob in 6 hours. how long will it take both of them working together to finish the job? Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website! A does in 3 hours
so A does 1/3 of the job in 1 hour
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B does in 6 hours
B can do 1/6 of the job in 1 hour.
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together they can dp 1/3 + 1/6 of the job in 1 hour
= 3/6
= 1/2 job in 1 hour
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they will do the job in 2 hours
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m.ananth@hotmail.ca
