Question

Paul owes Paula 35 cents and has a pocket full of 55-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

3
he could use:
1x55 cent coin
1x10 + 1x25 cent coins
4x10 cent coins

4-1=3

Answer 2

You can pay her with 10 cents and 25 cents or pay 55cents and get change back