Answer:
i dont even kno
Step-by-step explanation:
no it is 3/4 durrrrrrr what grade are you in
The selling price is <u>$29.40</u>
10% of $21 = $2.10
$2.10 x 4 = $8.40 = 40%
$21 + $8.40 = <u>$29.40</u>
Hope this helps!