Question

compute the extension totals and the invoice total for the following invoice.

8.
9.
10.
11.
12.
13.
14.

8.
9.
10.
11.
12.
13.
14.

Explanation:

Step1: Calculate extension total for item 8

Extension total = Quantity × Unit Price = \(20 \times 2.25 = 45.00\)

Step2: Calculate extension total for item 9

Extension total = \(16 \times 4.75 = 76.00\)

Step3: Calculate extension total for item 10

Extension total = \(6 \times 10.80 = 64.80\)

Step4: Calculate extension total for item 11

Extension total = \(3 \times 14.20 = 42.60\)

Step5: Calculate extension total for item 12

Extension total = \(14 \times 16.50 = 231.00\)

Step6: Calculate invoice total (sum of extension totals)

Invoice total = \(45.00 + 76.00 + 64.80 + 42.60 + 231.00 = 459.40\)

Step7: Calculate total amount due (invoice total + shipping/insurance)

Total amount due = \(459.40 + 146.20 = 605.60\)

Answer:

• Item 8 Extension Total: $\$45.00$
• Item 9 Extension Total: $\$76.00$
• Item 10 Extension Total: $\$64.80$
• Item 11 Extension Total: $\$42.60$
• Item 12 Extension Total: $\$231.00$
• Invoice Total: $\$459.40$
• Total Amount Due: $\$605.60$