SAT problem of the week, August 25, 2014

If $latex xy = 120 &s=1$ and $latex y = 15 &s=1$, then $latex y-x= &s=1$

  1. 5 (check answer)
  2. 7 (check answer)
  3. 8 (check answer)
  4. 12 (check answer)
  5. 15 (check answer)

Solutions, hints, and questions are welcomed. A full solution will be posted on the August 31st. If you would like to learn how to enter math formulas into this blog, visit the WordPress LaTeX tutorial page.

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