A video rental store charges $4 per day to rent a movie and $3 per day to rent a video game. During one summer, Tony paid a tota
l of $140 to rent movies and video games from this store. If he rented twice as many video games as movies, how much did he spend on movie rentals during the summer?
Let's use the variables m and v for this: 4m + 3v = 140 v = 2m Insert this variable: 4m + 3(2m) = 140 4m + 6m = 140 10m = 140 m = 14 One movie costs 4 dollars: 14*4 = 56 He spent $56 on movies