Final answer:
To find out how much money you will save with a 40% off coupon, multiply the original price of the bike by the decimal discount amount.
Step-by-step explanation:
To find out how much money you will save with a 40% off coupon, you need to calculate the discount amount. First, you will convert the percentage discount to a decimal by dividing it by 100. So, 40% becomes 0.40. Next, multiply the original price of the bike ($500) by the decimal discount amount (0.40) to find the discount savings: $500 x 0.40 = $200. Therefore, you will save $200 with the 40% off coupon.