Question

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?

Answer 1

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

Explanation:

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`