Final answer:
Ralph paid 75.37% of the original price for the tires
Step-by-step explanation:
To find the percent of the original price that Ralph paid for the tires, divide the sale price by the original price and multiply by 100. So, Ralph paid $542.98/$720.46 x 100 = 75.37% of the original price for the tires.
Learn more about Calculating percent of a number