Final answer:
Jonah will save $0.2261 per ounce by purchasing raisins in bulk compared to buying them at the grocery store. The cost per ounce at the grocery store is $0.4167, while it is $0.1906 per ounce for the bulk order.
Step-by-step explanation:
Jonah is considering two options for purchasing raisins to use in his bakery. To compare the savings per ounce between buying raisins at a grocery store or in bulk, we need to calculate the cost per ounce for each option and then find the difference.
Step 1: Calculate Cost per Ounce for Grocery Store Raisins
The grocery store sells raisins at $3.75 for 9 ounces. To find the cost per ounce, divide the total cost by the total number of ounces:
Cost per ounce = Total cost / Total ounces = $3.75 / 9 ounces = $0.4167 per ounce
Step 2: Calculate Cost per Ounce for Bulk Order Raisins
The bulk order provides 5 pounds of raisins for $15.25. Since there are 16 ounces in a pound, we first convert pounds to ounces:
5 pounds * 16 ounces/pound = 80 ounces
Now we find the cost per ounce:
Cost per ounce = Total cost / Total ounces = $15.25 / 80 ounces = $0.1906 per ounce
Step 3: Calculate the Savings per Ounce
Finally, we subtract the bulk order cost per ounce from the grocery store cost per ounce to find the savings:
Savings per ounce = Grocery store cost per ounce - Bulk order cost per ounce = $0.4167 - $0.1906 = $0.2261 per ounce
By ordering the raisins in bulk, Jonah saves $0.2261 per ounce.