Mary purchased 4 tires by mail order. she paid $63.40 per tire plus $6.80 per tire for shipping and handling. there is no sales tax, because the tires were purchased out of state. she also had to pay $7.56 per tire for mounting and balancing. at a local store, mary's total for the 4 tires with mounting and balancing would be $368 plus 88% sales tax. how much did mary save by purchasing the tires through the mail?

idk lol

step-by-step explanation:

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )