Answer:
Approximately 31%
Step-by-step explanation:
First, identify what you know:
1) The original purchase price was $90
2) With the credit card fee, the purchase was $118
First, subtract the total amount by the initial purchase charge, to find out how much the credit card fee was!
$118 - $90 = $28
The credit card fee was $28. What percentage of $90 is $28? Simply divide the extra money charged, by the initial value to figure out!
$28/$90 = 0.31 (line over one, to show infinite)
Now, simply move the decimal point over!
0.31 = 31%
The credit card fee was approximately 31% of $90.
