# Math Help - consumer

1. ## consumer

hi, i am in dier need...i am a senior and i have to take an exam for consumer math...this exam depends on me graduating this coming week, i took it today but i failed my teacher agreed to letting me re-take the exam....
the basics are:
selling price
mark up
and mark up rate
$\text{Selling Price} = \text{Total Cost }(1 + \text{Mark-Up Percent})$
$\text{Mark-Up Percent} = \frac{(\text{Selling Price} - \text{Total Cost})}{\text{Total Cost}}$