Asked by vincent
To obtain a final average of 80 % in a certain subject, what grade must a student earn in a test after having an average of 77.5 % in four examinations ?
Answers
Answered by
Ms. Sue
77.5 * 4 = 310
500 * 0.8 = 400
400 - 310 = 90
500 * 0.8 = 400
400 - 310 = 90
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