Bill made some purchases that totalled $18.75 and paid for them with a twenty-dollar bill. The cash register has only quarters, dimes and nickels.
In how many different ways can the cashier make change

  42

Step-by-step explanation:

The $1.25 in change can be made ...

5 quarters (1 way)4 quarters and any of 2, 1, 0 dimes (3 ways)3 quarters and any of 5, 4, 3, 2, 1, 0 dimes (6 ways)2 quarters and any of 7--0 dimes (8 ways)1 quarter and any of 10--0 dimes (11 ways)0 quarters and any of 12--0 dimes (13 ways)

Change can be made a total of 1+3+6+8+11+13 = 42 ways.

From the formula: d=rt we find the other onet=d/r456.68 divided by 46.6the result is 9.8.