2. There are some nickets, dimes, and quarters in a large piggy bank. For every 2 nickels, there are 3 dimes. For every 2 dimes, there are 5 quarters. There are 500 coins total.

  There are 80 nickels, 120 dimes, and 300 quarters.

Step-by-step explanation:

Since for every 2 dimes there are 5 quarters, and for every 2 nickels there are 3 dimes, there can be 4 nickels, so there will be 6 dimes and 15 quarters. When you add all of them up it equals 25, so you take 500 divided by 25, and that equals 20, so you take the 4 nickels, 6 dimes, and 15 quarters times 20.

20 x 4 = 80

20 x 6 = 120

20 x 15 = 300

Hope this helps! :D

1/5^2 = 7.56/45