For each of the five items (broccoli, turkey, lucky charms, milk, floor cleaner) you will be given three choices for the best deal.  Your choices will be from Shaw's, Stop & Shop, and Foodmaster.

You need to set up a proportion for each item from each store.  Solve for x in order to find the unit rate.

You want to choose the lowest unit rate in order to get the best deal.

Click on the following link for an explanation for how to find unit rates.

How to find a unit rate