The sales tax is $82.50 on a stereo sound system purchase of $1650. Find the sales tax rate

The rate is the quotient of the tax and the total
Since the tax is $82.50
Since the total is $1650
Then divide 82.50 by 1650, then multiply by 100%
[tex]\frac{82.50}{1650}\times100=5[/tex]The sales tax rate is 5%