Answer:
she can buy 3 pieces of candy
Explanation:
1. subtract the price of the ticket from $20
20 - 8.5 = 11.5
2. she has $11.50 left. divide that by the price of a piece of candy
11.5 / 3 = 3.83
she cannot buy 0.83 of a piece of candy, so you round down to the nearest whole number, which is 3.