Question

Mel Garrett needs four new tires for his car. He can buy one tire for $87, two tires for $174, three tires for $261, or four tires for $348. Which is the best buy?

Answer 1

They're all equal. They would all be $87. 
To find, divide each price by the number of tires.

Answer 2

Either one would really be the best buy, because they are all the same price for 1 tire.