Question

calculating invoices
to calculate invoices, follow these steps:

1. multiply quantity by unit price to find amount for each item.
2. add the amounts to find the subtotal.
3. figure the discount by multiplying discount by subtotal.
4. subtract the discount amount from the subtotal to find the net amount.
5. add prepaid shipping to net to find invoice total.
6. find the time discount by multiplying discount rate by subtotal.

invoice 1
quantity unit price amount
9 12.10
3 37.77
1 212.00
5 39.00
subtotal
less 10% discount
net
prepaid shipping 35.14
invoice total
time discount (2%) amount
invoice 2
quantity unit price amount
13 112.10
7 99.99
2 55.93
5 19.00
7 49.35
8 17.10
subtotal
less 8% discount
net
prepaid shipping 70.70
invoice total
time discount (5%) amount

Explanation:

Step1: Calculate amount for each item in Invoice 1

$9\times12.10 = 108.90$, $3\times37.77=113.31$, $1\times212.00 = 212.00$, $5\times39.00=195.00$

Step2: Calculate subtotal for Invoice 1

$108.90 + 113.31+212.00 + 195.00=629.21$

Step3: Calculate 10% discount amount for Invoice 1

$629.21\times0.10 = 62.921$

Step4: Calculate net amount for Invoice 1

$629.21- 62.921=566.289$

Step5: Calculate time - discount amount for Invoice 1

$566.289\times0.02=11.32578$

Step6: Calculate invoice total for Invoice 1

$566.289+35.14 - 11.32578 = 590.10322$

Step7: Calculate amount for each item in Invoice 2

$13\times112.10 = 1457.30$, $7\times99.99 = 699.93$, $2\times55.93=111.86$, $5\times19.00 = 95.00$, $7\times49.35 = 345.45$, $8\times17.10=136.80$

Step8: Calculate subtotal for Invoice 2

$1457.30+699.93 + 111.86+95.00+345.45+136.80 = 2846.34$

Step9: Calculate 8% discount amount for Invoice 2

$2846.34\times0.08=227.7072$

Step10: Calculate net amount for Invoice 2

$2846.34 - 227.7072=2618.6328$

Step11: Calculate time - discount amount for Invoice 2

$2618.6328\times0.05 = 130.93164$

Step12: Calculate invoice total for Invoice 2

$2618.6328+70.70-130.93164 = 2558.40116$

Answer:

Invoice 1:
Amounts: 108.90, 113.31, 212.00, 195.00
Subtotal: 629.21
Discount amount: 62.921
Net: 566.289
Time - discount amount: 11.32578
Invoice Total: 590.10322

Invoice 2:
Amounts: 1457.30, 699.93, 111.86, 95.00, 345.45, 136.80
Subtotal: 2846.34
Discount amount: 227.7072
Net: 2618.6328
Time - discount amount: 130.93164
Invoice Total: 2558.40116