Answer:
Given in the question:
The midterm counts as

Hence,
The score gotten from his midterm will be

The project score counts as

Hence,
The score gotten from the project work from the weighted average will be

The homework assignments count as

Hence,
The score gotten from the Homework from the weighted average will be

The exam counts as

Hence,
The score gotten from the exam from the weighted average will be

The aggregate percentage will be given by

Hence,
His overall final score is

Therefore,
The student will rank at GRADE C because his score is greater than 70 but less than 80