As a cashier starts his shift there is $100 in his cash register. At the end of the shift the register contains $800. If the provincial sales tax rate is 15%, how much of the $800 is for tax?

Answer 1

800 = 1.15x

695.65 = x

$104.35 was tax.

Answer 2

800-100 = 700 in sales

15% of 700 = 85