A equal 10 b equal 20 equal c equal a + b result

Answer: $c = 30$

Step-by-step solution

From the problem statement, the variable $a$ is assigned the value 10 and the variable $b$ is assigned the value 20.

We substitute $a = 10$ and $b = 20$ into the expression for $c$ .

Adding 10 and 20 gives 30. Therefore, the value of $c$ is 30.