Explain simply why 84 is the correct answer to: Gargamel needed new tires for his truck. He went to the auto shop and bought 4 tires on sale for $75 each. The salesman told him that he saved a total of $36. If Gargamel saved the same amount on each tire, what was the original price of each tire?. Explanation:
Gargamel saved $36 for all four tires, so to find the savings per tire was $36 / 4 = $9 saved per tire. Adding the savings to the discount price, the original price was $75 + $9 = $84.