Friday, January 8, 2010

How much does each gallon of paint and each brush cost?

You purchase 8 gal of paint and 3 brushes for $152.50. The next day, you purchase 6 gal of paint and 2 brushes for $113.00. How much does each gallon of paint and each brush cost?





equation: 8x + 3y = $152.50


6x + 2y = $113.00





Please explain the steps clearly if you can.How much does each gallon of paint and each brush cost?
8x+3y=152.5]*2


16x+6y=305





6x+2y=113]*-3


-18x-6y=-339





Then add the two resulting equations


-2x=-34


x=$17 and y = $5.50How much does each gallon of paint and each brush cost?
I would help but I can't put the explanation into written words. Good luck.
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