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A hardcover book sells for $24 at the Bookmart. Ben pays a total of $25.02 for the book. What is the sales tax rate? Show me how to do this with an equation and a proportion. Thanks :)



Answer :

olemakpadu
Since the book was sold for 25.02.
The sell price = 24.

Tax =  25.02 - 24 = 1.02.

The rate is the percentage of the sell price.

=  1.02 / 24  * 100%                        Converting the 1.02 to fraction  = 102 / 100
=    (102/100)  / 24    * 100
=      102 / 2400    * 100      Cancel the zeros at the top and bottom

=      102 / 24  * 1
=        102 / 24        2 into 102 = 51,  2 into 24 is 12
=    51 / 12.              3 into 51 is 17,   3 into 12 is 4.
=    17 / 4          Use your calculator.
=  4. 25

Tax rate = 4.25%.  Cheers.

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