Answer:
9 ways
Step-by-step explanation:
Here are the combinations:
Start with dimes (10), change with dimes (10) would be (10, 10, 1), (10, 5,5,1), (10, 5, 6), (10, 11)
With nickels (5), change would be (5,5,5,5,1), (5,5,5,6), (5,5,11), (5,16)
With pennies (1) it would be (21)
