Answer:
you dont have any answers but here they are:
18: 48
19: 5/48
20: 1/8
Explanation:
for 18, you basically count ig
19, 1/4 (dime possibility) times 5/12 (<30 days)
20, 3/4 (> 5 cents) times 1/6 or 2/12 (september and october possibility)
hope this helps!