Posted by **Tammie** on Friday, August 3, 2012 at 5:37pm.

A car dealer will sell you a used car for 5,107 with 107 down and payments of $152.92 per month for 48 months. What is the simple interest rate?

- Algebra -
**Ms. Sue**, Friday, August 3, 2012 at 5:47pm
(152.92 * 48) - 5,000 = 2,340.16

I = PRT

2,340.16 = 5,000 * R * 4

2,340.16 = 20,000R

2,340.16/20,000 = R

0.117 = 11.7% = R

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