The list price of an item is $ 78.99 and the net price is $ 56.67 . Determine the amount of discount.

78.99 - 56.67 = 22.32

22.32 / 78.99 = ?

Multiply the decimal quotient by 100 to find the percent of discount.

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To determine the amount of discount, you need to subtract the net price from the list price.

Amount of discount = List price - Net price

In this case:
List price = $78.99
Net price = $56.67

Amount of discount = $78.99 - $56.67

To subtract the two values, align the decimal points and then subtract the corresponding digits:

$78.99
- $56.67
__________
$22.32

Therefore, the amount of discount is $22.32.