Final answer:
Robert paid $33.66 in the end.
Step-by-step explanation:
To find out how much Robert paid in the end, we can follow these steps:
Calculate the discount by multiplying the original price ($34) by the discount rate (10%):
$34 times 0.10
= $3.40.
Subtract the discount from the original price to get the discounted price:
$34 - $3.40
= $30.60.
Calculate the processing fee by multiplying the discounted price ($30.60) by the processing fee rate (10%):
$30.60 times 0.10
= $3.06.
Add the processing fee to the discounted price to get the final amount paid by Robert:
$30.60 + $3.06
= $33.66.
So, Robert paid $33.66 in the end.