Marina wants to buy a sound system that costs $540. The sales tax rate in her state is 8.25%. How much sales tax must she pay?

1 Answer
Nov 29, 2017

Multiply the original amount by the decimal equivalent of the percentage.


A "percent" is literally "per 100", so to make a calculation you just divide the value by 100 to get the decimal value. That is then applied to the original amount to obtain the amount desired.

#8.25/100 = 0.0825#

#0.0825 xx 540 = 44.55#