30% OFForiginal price!Cooper buys a computer mouse during the sale. If the original price was $8.40, how much does Cooper pay?

Step 1: Understand the problem. Cooper is buying a computer mouse that is on sale for 30% off the original price. The original price is $8.40.

Step 2: Calculate the discount. The discount is 30% of the original price. To find this, multiply the original price by the discount rate (in decimal form). So, 0.30 (which is 30% as a decimal) times $8.40 equals$2.52. This is the amount of the discount.

Step 3: Subtract the discount from the original price. The original price is $8.40, and the discount is$2.52. So, $8.40 minus$2.52 equals $5.88.

So, Cooper pays $5.88 for the computer mouse.