7th - Percentages can Save or Make You Money!
How do you calculate commissions and discounts?
Vocabulary

A commission is a fee that is paid to a person (agent or representative) for providing a service or selling a product. Many salespeople are paid a commission in lieu of a salary or hourly wage. Sometimes they are paid a  small salary or low hourly wage plus a commission. The commission can be a flat fee or a percentage of the sale.