Final answer:
Anthony found a total of $5.15 in his couch by adding the value of 13 quarters, 15 dimes, and 8 nickels.
Step-by-step explanation:
To calculate the total amount of money Anthony found, we need to multiply the number of each type of coin by its value and then sum these amounts. Quarters are worth 0.25 dollars each, dimes are worth 0.10 dollars each, and nickels are worth 0.05 dollars each.
- Multiply the number of quarters by their value: 13 quarters × $0.25 = $3.25.
- Multiply the number of dimes by their value: 15 dimes × $0.10 = $1.50.
- Multiply the number of nickels by their value: 8 nickels × $0.05 = $0.40.
- Add the totals from each type of coin to find the total amount of money: $3.25 + $1.50 + $0.40 = $5.15.
Therefore, Anthony found a total of $5.15 on his couch.