SOLUTION: 1.I takes Jose 6 hours to change the breaks on his car. His wife Betty can do the breaks in 8 hours. How long would it take them if they work together?
NOTE:( can you please
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NOTE:( can you please
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Question 286491: 1.I takes Jose 6 hours to change the breaks on his car. His wife Betty can do the breaks in 8 hours. How long would it take them if they work together?
NOTE:( can you please show the work or somehow explain them so i can understand how to do it..thank you) Found 2 solutions by richwmiller, Edwin McCravy:Answer by richwmiller(17219) (Show Source):
You can put this solution on YOUR website! brakes for stopping are brakes.
Break down is when something breaks and is broken.
x/6+x/8=1
8x+6x=48
14x=48
7x=24
x=24/7 =3 3/7 hours
24/7/6+24/7/8=1
4/7 +3/7=1
You can put this solution on YOUR website! 1.I takes Jose 6 hours to change the breaks on his car. His wife Betty can do the breaks in 8 hours. How long would it take them if they work together?
Make this chart, putting in 1 for the no of jobs done,
the given times to do the job and the unknown x for
the quantity that was asked for, namely the time it
would take both together:
Number of Rate in Time in
Jobs Done Jobs/hour hours
Jose alone 1 6
Betty alone 1 8
both together 1 x
Now use the formula
to fill in the three rates:
Number of Rate in Time in
Jobs Done Jobs/hour hours
Jose alone 1 1/6 6
Betty alone 1 1/8 8
both together 1 1/x x
Now to set up the equation, we use:
Can you solve that for x? If not post again asking how.
Answer hours.
Edwin
