Answer:
The sales tax is $3.25
and the total cost of the shirt is $68.25
Explanation:
The shirt costs $65. So you know, that $65 is 100%.
First, you need to find out how much is 1%. You will find that by dividing 65 by 100.
Now, for your first question, you need to multiply 1% by 5 (sales tax).
For the total cost, you need to add up cost of shirt ($65) and the sales tax ($3.25)
And that is it.
$65=100%
$65/100=$0.65
$0.65=1%
$0.65*5=$3.25
$65+$3.25=$68.25