Luna has 39 coins in her coin collection. 7 of the coins are gold and the rest are silver. What is the ratio of the number of gold coins to the total number of coins?

There are 2 gold coins and 7 silver coins in Savannah's coin collection. What is the ratio of the number of gold coins to the total number of coins?Write your answer as a fraction. Use a slash ( / ) to separate the numerator and denominator.

Katie had 21 nickels, dimes and quarters worth $2.25. If she had twice as many nickels as quarters, how many of each type of coin did Katie have?

I have 45 coins in my pocket. They are all either nickels or quarters. Thevalue of the coins is $5.65. How many of each coin do I have?

Sue has 100 dimes and quarters. If the total value of the coins is $21.40, how many quarters does she have? Write and solve the system of equations.

John saved 20c and 50c coins. When he reached 100 coins the amount totalled $40.40.What percentage of the coins were 50 cent coins?