range of marks on the fifth examination


range of marks on the fifth examination

In the first four examination, each of 100 marks, Ryan got 94, 73, 72 , 84 marks. If a final average greater than or equal to 80 and less than 90 is needed to obtain a final grade B in a course, what range of marks on the fifth examination will result in Ryan receiving ‘B’ in the course ?

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