Answer:
x = 7
Explanation:
looking at the vertical sides, the ratio is 25 : 20 which can be simplified to 5 : 4.
25 = 20 X 1.25.
so the sides of the top shape are 5/4 = 1.25 times longer then the side on the bottom shape.
5x-5 = 1.25 X 24 = 30
we now have 5x - 5 = 30
add 5 to both sides of the equation
5x = 35
divide by 5
x = 7