I need help with this problem

Question

The soccer coach bought three new soccer balls. The total cost of the balls was $21.28.

The coach used a $20 bill and a $10 bill to pay for the balls.

Which combination of bills and coins should the coach receive as change?

Answer 1

If the coach gave $30, then 30-21.28=8.72

The coach would get back one $5 bill, three $1 bills, 2 quarters, 2 dimes and 2 pennies

Answer 2

Hello Leyla,

Since the coach paid $30, he/she will receive $8.72 in change seeing as $30 - $21.28 = $8.72.

Therefore, the coach will receive one $5 bill, three $1 bills, two quarters, two dimes, and two pennies as the combination of bills and coins as change.