SOLUTION: Steve has the following scores on the exams for the semester: 96, 85, and 89. Determine the minimum score Steve needs to make on the fourth exam to have a final average of an “A”

Algebra ->  Average -> SOLUTION: Steve has the following scores on the exams for the semester: 96, 85, and 89. Determine the minimum score Steve needs to make on the fourth exam to have a final average of an “A”       Log On


   

Question 1086617: Steve has the following scores on the exams for the semester: 96, 85, and 89. Determine the minimum score Steve needs to make on the fourth exam to have a final average of an “A” (a 93 or better).
Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
For a final average of 92.5 or more,
the sum of scores for all four exams must be 4%2A92.5=370
The three scores Steve already has add up to
96%2B85%2B89=270 .
The score Steve needs for the fourth exam is
370-270=highlight%28100%29 .
If Steve gets a score of 100 in the fourth exam,
his average will be %2896%2B85%2B89%2B100%29%2F4=92.5 ,
and that will hopefully be rounded up to 93.
If he gets 99 in the fourth exam,
his average will be %2896%2B85%2B89%2B100%29%2F4=92.25 ,
which should be rounded down to 92.