To find the final purchase price of Wynona's boots after successive discounts of 10% and then 5%, we can follow these steps:
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Calculate the first discount (10%):
- Original price = $85.79
- First discount = 10% of $85.79 = 0.10 * 85.79 = $8.579
- Price after first discount = $85.79 - $8.579 = $77.211
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Calculate the second discount (5%) on the new price:
- Second discount = 5% of $77.211 = 0.05 * 77.211 = $3.86055
- Price after second discount = $77.211 - $3.86055 ≈ $73.35045
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Calculate the final purchase price as a percentage of the original price:
- Percentage of original price = (Final price / Original price) * 100
- Percentage of original price = ($73.35045 / $85.79) * 100 ≈ 85.5%
Thus, the final purchase price of Wynona’s boots is approximately 85.5% of the original price.
So the correct answer is: d. 85.5%