Question

Mary purchased 4 tires by mail order. she paid ​$64.40 per tire plus​ $6.90 per tire for shipping and handling. there is no sales​ tax, because the tires were purchased out of state. she also had to pay​ $8.75 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 6​% sales tax. how much did mary save by purchasing the tires through the​ mail?

Answer 1

Mary saved $69.88 by purchasing 4 tires through mail order compared to buying them at a local store with mounting, balancing, and sales tax.

Step-by-step explanation:

To calculate how much Mary saved by purchasing the tires through the mail order, let's first calculate the total cost of purchasing the tires locally. The local store's price for 4 tires with mounting and balancing is $368, and we must add a 6% sales tax:

Total cost at the local store = $368 + ($368 × 0.06) = $368 + $22.08 = $390.08

Now, let's calculate the total cost for mail order. She paid $64.40 per tire plus $6.90 per tire for shipping and handling, and $8.75 per tire for mounting and balancing:

Total cost per tire through mail = $64.40 + $6.90 + $8.75 = $80.05

Total cost for 4 tires through mail = $80.05 × 4 = $320.20

Mary's savings = Cost at local store - Cost through mail order = $390.08 - $320.20 = $69.88