Question

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Explanation:

Define the variable

Let \(x\) be the price of the movie ticket 4 years ago.

Set up the equation

The current price is \(125\%\) of the price 4 years ago.
We express \(125\%\) as a decimal:

$$125\% = 1.25$$

The current price is given as \(\$20\) (deduced from the cut-off text "\$2").

$$1.25x = 20$$

Solve for the unknown

Divide both sides by \(1.25\) to find \(x\):

$$x = \frac{20}{1.25}$$

$$x = 16$$

Answer:

\(16\)