SOLUTION: One day a store sold 17 sweat shirts. White ones cost $11.95, yellow ones cost $11.50. In All $198.65 worth of shirts were sold How many of each?

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: One day a store sold 17 sweat shirts. White ones cost $11.95, yellow ones cost $11.50. In All $198.65 worth of shirts were sold How many of each?      Log On


   

Question 839296: One day a store sold 17 sweat shirts.
White ones cost $11.95, yellow ones cost $11.50. In All $198.65 worth of shirts were sold How many of each?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

Let x and y represent the number of white and yellow sweaters respectively

    x  + y = 17    0r  y+=+17+-+x+

 11.95x + 11.50y = $198.65

11.95x + 11.50(17-x) = 198.65  |solving the system of EQs by substitution

             .45x = 198.65 - 195.50

              .45x = 3.15

                x = 7  and y = 10   (17-7)

CHECKING our answer***

7%2A11.95+%2B+10%2A11.50+=+83.65+%2B+115 = $198.65

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