Sajjad1994
In the state where Ozzie’s Office Supply is located, the sales tax on all orders is 6% of the order cost. Ozzie’s adds a shipping charge, which is calculated as a percentage of the amount after tax has been added. The percentage rate for that shipping charge varies, however, with the size of the order. The company charges one rate for orders less than or equal to $100, another for orders over $100 but not more than $500, and a third for orders over $500. From experience, you know that the final cost, including tax and shipping, is $109.18 for an order of $100, $217.30 for an order of $200, and $756.84 for an order of $700. Find the final cost for orders of $499 and $502.
For an order of $200, Sales tax is $12 since 6% of 200 is 12. The effective price after sales tax = $212. Final Price is $217.3. Calculating percentage increase from amount after sales tax = (217.3-212)/212 =
2.5%For an order of $700, Sales tax is $42 since 6% of 700 is 42. The effective price after sales tax = $742. Final Price is $756.84. Calculating percentage increase from amount after sales tax = (756.84-742)/742 =
2%Which means for order above 100 but less than 500, final value is 2.5% higher than the amount including sales tax while for orders above 500, its 2% higher than the amount including sales tax.
Using this information
For order value of $499, Final cost is 499*1.06*1.025 =
542.16For order value of $502, Final cost is 502*1.06*1.02 =
542.76