Answer:
You need to find the unit cost of each sale.
Step-by-step explanation:
To find the unit cost, you divide the price by the amount of the object. So the setup for each equation is 120/4, 100/2, and 99/3. The answers for each are $30 for one pair of jeans, $50 for one pair of jeans, and $33 for one pair of jeans. The cheapest pair of jeans is $30 dollars at store A. The best deal is store A. Hope this helps :)