There were 80 cars in a parking lot. At lunchtime, 13 cars left the parking lot but 5 more cars went in than left. How many cars are in the parking lot now? Think carefully first, then make a decision:
There are 80 - 13 = 67 cars in the parking lot after 13 went out. 13 + 5 = 18 cars went in the parking lot at lunchtime. So, there are 67 + 18 = 85 cars in the parking lot now. So, the answer is 85.