Question 1064214
Let n be the amount spent on books or a calculator before tax. Then
n+.15n=345
1.15n=345
n=300
And
n+.1n=110
1.1n=110
n=100
The total amount of sales tax is (345-300)+(110-100), or 55. &#9786;&#9786;&#9786;&#9786;