On the first four exams, Steve's grades are 70, 76, 88, and 92. There is still one more exam and he is hoping to earn a B in the course. This will occur if the average of his first five exam grades is greater than or equal to 80 and less than 90. What range of grades on the fifth exam will result in earning a B?
The range of grades on the fifth exam that results in earning a B is ___? If the highest grade is 100, then
_____.