# 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\$

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.

# SAT problem of the week, August 18, 2014 Solution

Hint for process of elimination: If we read carefully, we notice that the price of a single pair of shoes at the shoe store is \$latex a &s=1\$. The problem asks for the difference involving the cost of eight pairs of shoes at the shoe store. Therefore, the answer must have a term of \$latex 8a &s=1\$. This eliminates choices A, C, and E.

You can now try to reason through choices B and D. Since you eliminated three choices, you are statistically likely to improve your score by not leaving the answer blank, so you have to choose either B or D.

Read on for a full solution.

Continue reading

# 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.