If a book costs 80.00 and the sales tax is 8.25 percent and you have 100.00 How much change will you receive back?

Now I know the answer is 13.40 But how please explain to me step by step how it was done so I can better understand this.Thank you.

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If a book costs 80.00 and the sales tax is 8.25 percent and you have 100.00 How much change will you receive back?

Now I know the answer is 13.40 But how please explain to me step by step how it was done so I can better understand this.Thank you.

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## Answers (2)

8.25% is the same as .0825.

If you multiply 80 by 1.0825 that will give you the total cost of the book. Or you could multiply 80 by .0825 and than add 80. Subtract that from 100 and you have you answer.

100 – [ 80 + 8.25% of 80] = â â â â â â write the % as a decimal

100 – [ 80 + 0.0825 • 80] = â â â â â â âmultiply to get amount of tax

100 – [ 80 + 6.60 ] = â â â â â â â â â â â add tax to price

100 – 86.60 = â â â â â â â â â â â â â â â â subtract total from amount tendered

13.40