SOLUTION: Juan can do 2 jobs in 4 days, and Sergio can 4 jobs in 5 days. One hundred seven jobs need to be done. If Juan works for 6 days and then Sergio begins to help, how long will they w
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Question 1157001: Juan can do 2 jobs in 4 days, and Sergio can 4 jobs in 5 days. One hundred seven jobs need to be done. If Juan works for 6 days and then Sergio begins to help, how long will they work together to finish the 107 jobs?
Please show work thanks!!
Found 2 solutions by josgarithmetic, josmiceli:
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
That means, Juan does job per day and Sergio jobs per days.
----------solve for x.
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Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Jaun's rate of working is:
jobs/days
In 6 days he can do:
jobs
---------------------------
jobs left to be done
Let = time in days to do
jobs working together
Add their rates working together:
Multiply both sides by
It will take them 80 days working together to finish
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check:
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check my math and get a 2nd opinion if needed
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