Explain how you can use a unit rate to compare what store is a better buy.
To use a unit rate to compare which store is a better buy, you need to determine the cost per unit of a particular item in each store. A unit rate is the cost of one unit of measurement, such as the price of one pound of apples or one gallon of gas.
Here's how you can use a unit rate to compare the prices at different stores:
1. Identify the item you want to compare: Decide on the specific product you are interested in, like a bag of apples or a gallon of milk.
2. Gather price information: Visit the stores you want to compare and note down the prices of the item at each store. Make sure that the quantity or unit of measurement is the same for accurate comparison.
3. Calculate the unit rate: Determine the unit rate by dividing the price of the item by the quantity. For example, if a store sells a bag of apples for $4 and the weight of the bag is 2 pounds, the unit rate would be $4/2 pounds = $2 per pound.
4. Compare the unit rates: Once you have determined the unit rates for the item at each store, compare them. Generally, the store with the lower unit rate is the better buy, as it offers a lower cost per unit. This means you are getting more value for your money.
5. Consider other factors: While unit rates are helpful in determining which store offers a better deal, it's also important to consider other factors such as store location, quality of products, and additional discounts or promotions that might affect the overall value.
By using unit rates to compare prices, you can make informed decisions about where to shop and find the best possible deals.