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Posted by on Wednesday, January 23, 2013 at 8:54pm.

estimate the sales tax and final cost of a book that costs $12.99 with a sales tax of 6%

  • math - , Wednesday, January 23, 2013 at 9:09pm

    0.06 * 13 = ?

    Add the tax to 13.

  • math - , Sunday, May 17, 2015 at 7:53pm

    all you need to do is round both numbers up so all you do is 0.06*13=0.78

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