SOLUTION: a course has 5 equally weighted exams. a student has grades so far of 62%, 73%, 81% and 79%. what would the student need on the last exam for a score of at least 70%?

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Question 450703: a course has 5 equally weighted exams. a student has grades so far of 62%, 73%, 81% and 79%. what would the student need on the last exam for a score of at least 70%?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let x = score the student needs on last exam
+%2862+%2B+73+%2B+81+%2B+79+%2B+x%29+%2F+5+=+70+
+%2862+%2B+73+%2B+81+%2B+79+%2B+x+=+350+
+295+%2B+x+=+350+
+x+=+55+
The student needs a 55% to average at least 70%