Question

Paul owes Paula 35 cents and has a pocket full of 5-cent coins, 10-cent coins, and 25-cent coins that he can use to pay her. What is the difference between the largest and the smallest number of coins he can use to pay her?

Answer 1

a quarter and a dime (difference: .15)
a quarter and four nickels (difference: .20)
a dime and five nickels (difference: .5)
two dimes and three nickels (difference: .5)
three dimes and a nickel (difference: .5)
seven nickels (difference: 0)