SOLUTION: * Sammy can complete a programming job in 8 hours if he works alone.
* Marilyn can complete the same programming job in 12 hours if she works alone.
If Sammy and Marily
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-> SOLUTION: * Sammy can complete a programming job in 8 hours if he works alone.
* Marilyn can complete the same programming job in 12 hours if she works alone.
If Sammy and Marily
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Question 380382: * Sammy can complete a programming job in 8 hours if he works alone.
* Marilyn can complete the same programming job in 12 hours if she works alone.
If Sammy and Marilyn work together, how many hours and minutes will they complete the job? Answer by mananth(16949) (Show Source):
You can put this solution on YOUR website! Sammy can complete a programming job in 8 hours if he works alone.
So he does 1/8 of the job in 1 hour
..
Marilyn can complete the same programming job in 12 hours if she works alone
Marilyn can do 1/12 of the job in 1 hour.
...
Together they can do 1/8 +1/2 of the job in 1 hour
=(3+2)/24
=5/24 of the job in 1 hour
..
so they will take 24/5 hours to do the job
=4.8 hours
=4hours +0.8*60minutes
=4hours +48 minutes
...
m.ananth@hotmail.ca
