Ross purchases 3 cookbooks for $18.89 each, a set of measuring cups for $2.68, 4 kitchen utensils for $5.35 each, and a cooling rack for $9.60. Ross uses a promotional discount of $5 off on the purchase of 3 or more cookbooks. There are no taxes charged on his purchase, but shipping charges are based on the following table:
| Amount of Purchase | Standard Shipping | Express Shipping |
| :----------------- | :---------------- | :--------------- |
| up to $50 | $4.00 | $7.00 |
| $50 up to $100 | $5.25 | $9.50 |
| $100 up to $200 | $6.00 | $12.75 |
| $200 and over | $8.50 | $15.00 |
Ross selects standard shipping and is billed $94.35 for the total of the online purchase. Determine if Ross has been billed correctly for his purchase.
A. Ross has been billed correctly.
B. Ross has not been charged enough for his purchase.
C. Ross has been over charged by $3.75 for his purchase.
D. Ross has been over charged by $4.25 for his purchase.
Answer (2)
Ross was overcharged by $3.75 for his purchase. After calculating the costs of all items and shipping, the total should have been $90.60. The correct choice is C.
;
Calculate the discounted cost of the cookbooks: $3 \times $18.89 - $5 = $51.67.
Calculate the cost of the kitchen utensils: $4 \times $5.35 = $21.40.
Calculate the subtotal: $51.67 + $2.68 + $21.40 + $9.60 = $85.35.
Add the standard shipping cost: $85.35 + $5.25 = $90.60. Ross was overcharged by $3.75 .
Explanation
Calculate the cost of the cookbooks First, let's calculate the cost of the 3 cookbooks. Each cookbook costs $18.89, so the total cost is $3 \t\times 18.89 = $56.67.
Apply the discount Next, we apply the promotional discount of $5 since Ross purchased 3 cookbooks. The discounted cost of the cookbooks is $56.67 - $5 = $51.67.
Calculate the cost of the utensils Now, let's calculate the cost of the 4 kitchen utensils. Each utensil costs $5.35, so the total cost is $4 \t\times 5.35 = $21.40.
Calculate the subtotal Next, we calculate the subtotal of all items before shipping. This includes the discounted cookbooks, measuring cups, kitchen utensils, and the cooling rack: $51.67 + $2.68 + $21.40 + $9.60 = $85.35.
Determine the shipping cost Now we need to determine the shipping cost. According to the table, for a purchase between $50 and $100, standard shipping costs $5.25. Since our subtotal is $85.35, the standard shipping cost is $5.25.
Calculate the total cost Next, we calculate the total cost by adding the subtotal and the shipping cost: $85.35 + $5.25 = $90.60.
Compare and conclude Finally, we compare the calculated total cost of $90.60 with the billed amount of $94.35. The difference is $94.35 - $90.60 = $3.75. Therefore, Ross was overcharged by $3.75.
Examples
Imagine you're shopping online for school supplies. Calculating the total cost, applying discounts, and figuring out shipping fees is just like what Ross did. By understanding how to break down these costs, you can make sure you're getting the best deal and not overpaying. This skill is super useful for budgeting and making smart purchasing decisions every time you shop!
