Question

You buy 6 notebooks and a backpack. The cost of the backpack is $18.70. You pay 6% in sales tax on your purchase, and your total bill is $39.22. How much does each notebook cost?

Answer 1

$3.05

Explanation:

Backpack=$18.70

6 note books=x

Sales tax=6%

Total cost=$39.22

18.70+x+0.06(18.70+x)=39.22

18.70+x+1.122+0.06x=39.22

19.822+1.06x=39.22

1.06x=39.22-19.822

1.06x=19.398

x=19.398/1.06

=18.3

x=$18.3

6 books=$18.3

Each book cost=18.3/6

=$3.05