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1.Add a method called weightedGrade(int iIn) to the Student class. This method will take an number of type 'int' and return a decimal number of type 'float':
2.Obtain the gpa from a call to the method that calculates the gpa and set the result to a variable declared within this method to hold the gpa.

public float weightedGrade(int iIn)
    {
        private float weightedGPA;

        weightedGPA = GPACalc();
        return weightedGPA;
    }