Travis and his brother joined a trick-or-treat event. They collected 68 pieces of candy altogether. Each of them ate 4 pieces of candy after the event. How many pieces of candy were left? Let's think first. Chain of thought:
They ate a total of 4 x 2 = 8 pieces of candy after the event. So, Travis and his brother have 68 - 8 = 60 pieces of candy left.
Therefore, the answer is 60.