Explanation:
Let,
Cost of movie = $ x
Cost of video game = $ y
In case 1
2x + 6y = 40 (1)
In case 2
5x + 3y = 25 (2)
On multiplying Eq. #2 by 2
2(5x + 3y) = 2(25)
10x + 6y = 50 (3)
On subtracting 1 and 3
10x + 6y - 2x - 6y = 50 - 40
8x = 10
x = 10/8
x = $ 4/5
From 1
2 × 4/5 + 6 × y = 40
8/5 + 6y = 40
6y = 40 - 8/5
6y = 200 - 8/5
6y = 192/5
y = 192/5 × 1/6
y = $ 32/5