Answer:
$30
Step-by-step explanation:
We know that $21 dollers is the 84% of the price remaining: 84% of x=21
Now divide by 7 on both sides (were doing this so we can than multiply back to 100%): 12% of x=3
Now just multiply both sides by 8 1/3(8 1/3 times 12 is 100): 100% of x=2=25
Remember about that $5 and add that in: 25+5=30
The answer is $30!
Hope this help! :)