Test Average and Grade Write a program that asks the user to enter five test scores. The program should display a
letter grade for each score and the average test score. Write the following methods in the
program:

calcAverage:
This method should accept five test scores as arguments and return the
average of the scores.

determineGrade:
This method should accept a test score as an argument and return a
letter grade for the score, based on the following grading scale:

Score Letter Grade
90-100 A
80-89 B
70-79 C
60-69 D
Below 60 F