A jar contains x nickels and y quarters only. What percentage of the total number of coins are quarters?
y/(x+y)
To find the percentage of quarters in the jar, we need to know the total number of coins in the jar and then divide the number of quarters by that total.
Let's say the total number of coins in the jar is T.
To find the percentage of quarters, we divide the number of quarters (y) by the total number of coins (T), and then multiply by 100 to convert it into a percentage.
Percentage of quarters = (y / T) * 100
To calculate the total number of coins (T) in the jar, we need to know the number of nickels (x) and quarters (y).
Total number of coins (T) = Number of nickels (x) + Number of quarters (y)
Using this equation, we can calculate the percentage of quarters in the jar.