Final answer:
The value of the coin combination consisting of 20% nickel coins and 80% penny coins is 1.8 dollars.
Step-by-step explanation:
To find the value of the coin combination, we need to consider the ratio of 1 nickel to 3 pennies and the percentages of nickel and penny coins. Let's assume we have a total of 100 coins. Since the ratio is 1 nickel to 3 pennies, we would have 20 nickels and 80 pennies based on the given percentages.
The value of a nickel is 5 cents, so the total value from the nickels would be 5 cents multiplied by 20, which is 100 cents or 1 dollar.
The value of a penny is 1 cent, so the total value from the pennies would be 1 cent multiplied by 80, which is 80 cents or 0.8 dollars.
Therefore, the value of the coin combination consisting of 20% nickel coins and 80% penny coins is 1 dollar and 0.8 dollars, which is a total of 1.8 dollars.