Ayana has 220 coins in her piggy bank. Of those 40% are pennies. Out of the coins that are not pennies, 25% are quarters. How many of the coins are quarters?"

First, found out how many coins are pennies and subtract that from the first 220. Note 40% is. 40 times the amount

220 *.40 = 88 pennies

220 - 88 = 132 other coins

Of these remaining 132 coins 25% are quarters, so calculate this to find the answer:

132 *.25 = 33 quarters!