"Fast Food Math Challenge: Can You Solve It?"

Let's solve this step by step.

Step 1: Determine the value of the drink  

From the first equation:  

Drink + Drink + Drink = 30

Since there are three drinks, we divide:  

Each drink = 10

Step 2: Determine the value of the burger  

From the second equation:  

Drink + Burger + Burger = 20

Substituting Drink = 10

10 + Burger + Burger = 20

So,  

Burger + Burger = 10

Dividing by 2:  

Each Burger = 5

Step 3: Determine the value of the fries  

From the third equation:  

Burger + Fries + Fries = 9

Substituting Burger = 5

5 + Fries + Fries = 9

So,  

Fries + Fries = 4

Dividing by 2:  

Each Fries = 2

Step 4: Solve the final equation  

The final equation is:  

Burger + (Fries × Drink) = ?

Substituting values:  

5 + (2 × 10) = 5 + 20 = 25

Answer:  

The final answer is 25.