1 = Prt where r represents the rate. Rates must be converted into before multiplying.
a) fractions
b) mixed numbers
c) decimals

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.