SOLUTION: application of systems of equations(solve algebraically): Preston bought 9 quarts of paint. One type cost $6 per quart and another cost $5 per quart. The total cost was $48. How

Algebra ->  Rational-functions -> SOLUTION: application of systems of equations(solve algebraically): Preston bought 9 quarts of paint. One type cost $6 per quart and another cost $5 per quart. The total cost was $48. How      Log On


   

Question 1049981: application of systems of equations(solve algebraically):
Preston bought 9 quarts of paint. One type cost $6 per quart and another cost $5 per quart. The total cost was $48. How many of each type of paint did he buy? (define the variables, set up the system, and solve)
i missed school cause i was sick and i am very lost at how to do this .. thank you!

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application of systems of equations(solve algebraically):
Preston bought 9 quarts of paint. One type cost $6 per quart and another cost $5 per quart. The total cost was $48. How many of each type of paint did he buy? (define the variables, set up the system, and solve)
i missed school cause i was sick and i am very lost at how to do this .. thank you!
solution
let x be one type of the paint and y be the other type.
6x%2B5y=48
x%2By=9
Solved by pluggable solver: Linear System solver (using determinant)
Solve:
+system%28+%0D%0A++++6%5Cx+%2B+5%5Cy+=+48%2C%0D%0A++++1%5Cx+%2B+1%5Cy+=+9+%29%0D%0A++

Any system of equations:


has solution

or



(x=3, y=6}