SAT problem of the week, August 18, 2014

A pair of shoes costs customers $latex a &s=1$ dollars at the shoe store. The shoe store pays $latex b &s=1$ dollars for a box of eight pairs of shoes wholesale. If the cost of eight pairs of shoes purchased wholesale is $latex c &s=1$ dollars less than the cost of eight pairs of shoes at the shoe store, which of the following equations must be true?

  1. $latex a-8b+c=0 &s=1$ (check answer)
  2. $latex 8a-b+c=0 &s=1$ (check answer)
  3. $latex a-b-c=0 &s=1$ (check answer)
  4. $latex 8a-b-c=0 &s=1$ (check answer)
  5. $latex a+8b-c=0 &s=1$ (check answer)

Solutions, hints, and questions are welcomed. A full solution will be posted on August 24th. If you would like to learn how to enter math formulas into this blog, visit the WordPress LaTeX tutorial page.

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