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 a
nd 86. find what score the student must get on the next test to get an a average
1 answer:
Answer:
90
Step-by-step 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.
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