SOLUTION: Jerson’s grades on his four quizzes are 88, 87, 90, and 95. If his target average on his five quizzes is not less than 91, at least what score should he get on the fifth quiz?

Question 1173691: Jerson’s grades on his four quizzes are 88, 87, 90, and 95. If his target average on his
five quizzes is not less than 91, at least what score should he get on the fifth quiz?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
average=total/n
total=n*average
total=5*91=455.
sum of 4 is 360
need a 95.
-
check
the scores are -3,-4,-1,+4 or 4 below the desired average of 91.
the last score needs to be 4 above the desired average or 95.,
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