My piggy bank is overflowing, so I have been sorting coins for the past few days. I only save quarters (25¢), dimes (10¢), and nickels (5¢). As you can see from the photo, I have LOTS more quarters than dimes and more dimes than nickels. That got me thinking about the least amount of coins required (using only quarters, dimes, and nickels - no pennies) to make change from 5 cents to 95 cents. The following possible combinations illustrate why I have more quarters than dimes and more dimes...