26)a $45.00 purchase in iowa totals $47.70 with tax and a $35.00 purchase in tennessee totals$37.70 with tax which state has a greater sales tax percentage? explain your reasoning .

First, 47.7-45 to get price increase by tax for I which is 2.7. next divide 2.7 by 45 and multiply that by 100 to get a sales tax of 6%. Next 37.7-35 is once again 2.7. divide 2.7/35 and multiply times 100 to get a sales tax of 7.7 for T. T=7.7% and I=6% so since 7.7>6, therefore Tennessee has a greater sales tax then Iowa

What mathematical statement is missing ? ? the answer is b