Question

to pass a course with an a grade a student must have an average of 90 or greater. a student's grade's on three tests are 83 91 and 86. find what score the student must get on the next test to get an a average

Answer 1

90

Explanation:

Find total marks needed for a 90.

90 x 4 = 360 marks

Then, add up the marks on the three tests.

83+91+86 = 260 marks

Finally, subtract from the 360 marks needed.

360 - 260 = 100

Thus, the student needs to score 100 marks in order to get a 90.