Answer:
The following are the code to this question:
gradAge = 4 + matricAge; // add value 4 in matricAge and store it value in gradAge variable
Explanation:
In the given question it is already defined, that two integer variable, that is "matricAge and gradAge" is declared, that holds some value.
In the above code, we use both the above-declared variable and add value 4 in the "matricAge" variable and store its calculated value into the "gradAge" variable
