SOLUTION: On five tests (on which the scores could range anywhere from 0 to 100, inclusive) Katie had
an average of exactly 88. Find the lowest score Katie could have received on one test
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an average of exactly 88. Find the lowest score Katie could have received on one test
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Question 659428: On five tests (on which the scores could range anywhere from 0 to 100, inclusive) Katie had
an average of exactly 88. Find the lowest score Katie could have received on one test. Answer by colliefan(242) (Show Source):
You can put this solution on YOUR website! This is a weird question.
Her lowest grade is possible if the other four were all 100s. The question is then what test score when averaged with four 100s gives an average of 88?
Avg=(100+100+100+100+x)/5
88=(400+x)/5
5*88=(400+x)/5 * 5
440=(400+x)*1
440=400+x
440-400=400+x-400
40=x
Substitute in in to see if the average is 88.
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