• anonymous
.One day a store sold 18 sweatshirts. White ones cost $9.95 and yellow cost $13.50. In all, $214.60 worth of sweatshirts were sold. How many of each color were sold? White ? Yellow ?
  • schrodinger
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  • anonymous
Solve simultaneously the equation representing total dollar sales:\[9.95W+13.5Y=214.6\]where W and Y are the number of white and yellow shirts sold, respectively, and:\[W+Y=18\]since 18 shirts were sold in total. This gives W=8 and Y=10.

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