The Maple street Youth Club took 22 people to the ball game. Three people rode to the game in each car, and seven people took the bus. On the way home, four people rode in each car, and the rest took the bus. How many people took the bus on the way home?
22 people
-7 rode bus
____________
15 people
/3 per car
___________
5 cars
* 4 people per car
___________
20 people in cars
22-20=2 rode bus home