SOLUTION: on Mr robinsons last history test for this marking period the average score was 98. Forty students took the test and 39 students got a 100. What was the score of the student who di
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Question 965787: on Mr robinsons last history test for this marking period the average score was 98. Forty students took the test and 39 students got a 100. What was the score of the student who did not get a 100 on the test
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
(39*100+X)/40=98
(3900+X)/40=98
3900+X=40*98
3900+X=3920
X=3920-3900
X=20 GRADE FOR THE NON 100 TEST SCORE TEST
PROOF:
(3900+20)/40=98
3920/40=98
98=98
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