Answer:
You can can receive 9 different ways to receive change from a ten-dollar bill
Step-by-step explanation:
- Total spent: $9.79
- How much payed: $10
The change will be $10 - $9.79 = 0.21
- Change: $0.21
Possible coins:
penny: 1¢ ($0.01)
nickel: 5¢ ($0.05)
dime: 10¢ ($0.10)
25¢ (this is too high, can't use)
Combinations:
To get 21...
- not ideal but 21 pennies
- 11 pennies + 1 dime
- 1 penny + 2 dimes
- 16 pennies + 1 nickle
- 11 pennies + 2 nickels
- 6 pennies + 3 nickels
- 1 penny + 4 nickels
- dime + nickle + 6 pennies
- dime + 2 nickels + 1 penny
using dimes: [10, 10, 1] [10, 5, 5, 1] [10, 5, 6x1] [10, 11x1]
using nickels: [5, 5, 5, 5, 1] [5, 5, 5, 6x1] [5, 5, 11x1] [5, 16x1]
using pennies: 21x1
So, there are 9 ways to make the change.
