Question

The total cost of a compact disc, including a 6% sales tax, is $14.31.

What is the price before the tax?



$15.17

$13.50

$13.45

$13.44

Answer 1

x+6x/100 = 14.31
=>106x = 1431
=>x=13.5

Answer 2

First thing you want to do is find what is 6% of 14.31. You can find this using your calculator and putting the percentage in decimal form then multiplying it by the given amount. 0.06 x 14.31 = ?
And then you take that number and subtract it from 14.31. :)