Final answer:
To calculate the change from a $20.00 payment for a $17.23 product, subtract the cost of the product from the amount received, resulting in $2.77 change to be given back to the client.
Step-by-step explanation:
If a product costs $17.23 and the client hands you $20.00 in cash as payment, the change you give back is calculated by subtracting the cost of the product from the amount the client gave you:
Change Given Back = Amount Received - Cost of Product
Change Given Back = $20.00 - $17.23
Change Given Back = $2.77
You would give the client $2.77 in change.