You are given a math word problem and you are supposed to apply multiple mathematical operators like addition, subtraction, multiplication or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

At the fair there were 12 people in line for the bumper cars . If 10 of them got tired of waiting and left and 15 more got in line , how many people would be in line ?
17

Megan 's class is going on a field trip to the zoo . If each van can hold 5 people and there are 25 students and 5 adults going , how many vans will they need ?
6

A restaurant sold 49 hamburgers last week . How many hamburgers on average were sold each day ?
7