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August 21, 2014

August 21, 2014

Posted by **mi** on Thursday, September 2, 2010 at 12:14pm.

- math -
**George**, Thursday, September 2, 2010 at 1:07pmthe best way to go about this question is trial and error. if he worked 7 hours and made 39.50, then if he works 3 hours painting the fence, and 4 hours mowing the grass then he makes 39.50.

i'm sure you can make equations for it but it's much quicker and easier to go about this question this way.

- math -
**mi**, Thursday, September 2, 2010 at 1:21pmmy 6th grade grandaughter needs an equation. than you.

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**mi**, Thursday, September 2, 2010 at 1:41pmgeorge can you give me some additional help. thanks

- math -
**Jen**, Thursday, September 2, 2010 at 1:53pmx+y=7

4.5x+6.5y=39.5

Multiply the top equation by -4.5 to cancel the x's:

-4.5x-4.5y=-31.5

4.5x+6.5y=39.5

2y=8

y=4

Put that back in the first equation to solve for x.

- math -
**Jen**, Thursday, September 2, 2010 at 1:54pmYou do NOT want to attempt this problem by trial and error.

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**George**, Thursday, September 2, 2010 at 2:09pmI feel i may have stepped on some toes. I am sorry for that. I am not the most intelligent person in the world and I sincerly appoligize.

- math -
**Jen**, Tuesday, September 7, 2010 at 10:17pmNo need for an apology, George. I was simply saying that it's not the best method. :)

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