Correct option is B. The missing value is 24
Given,
[tex]\frac{4}{5} = \frac{x}{30}[/tex]
On solving,
x = 30 × 4 / 5
x = 120 / 5
x = 24
Solve for x means finding the value of x for which the equation holds true. i.e when we find the value of x and substitute in the equation, we should get L.H.S = R.H.S
If I ask you to solve the equation 'x + 1 = 2' that would mean finding some value for x that satisfies the equation.
Do you think x = 1 is the solution to this equation? Substitute it in the equation and see.
1 + 1 = 2
2 = 2
L.H.S = R.H.S
That’s what solving for x is all about.
To learn more about finding the value of x from the given link
https://brainly.com/question/8973807
#SPJ4