You have save 150 quarters in a jar. Of that total, 25 were minted before 1970, 35 were minted between 1970 and 1980, and the remaining quarters were minted after 1980. If you pick a quarter out of the jar without looking, what is the probability the you will pick a quarter minted after 1980?
- 25+35=60
- 150-60=90
- 90/150=9/15=3/5