Answer:
To find the percentage of Helen's nickels among her saved coins, we can use the formula:
Percentage = (Number of nickels / Total number of coins) * 100
In this case:
Percentage = (96 nickels / 512 coins) * 100
Calculating the percentage:
Percentage ≈ (0.1875) * 100
Percentage ≈ 18.75%
So, 18.75% of Helen's coins are nickels.
Explanation: