ALGEBRA
posted by Danny .
A car dealer will sell you a used car for $6,162 with $162 down and payments of $214.67 per month for 36 months. What is the simple interest rate? (Round each answer to the nearest tenth.)

214.67*36=7728.12
7728.126000=1728.12
1728.12/6000=.28802=28.8%