SOLUTION: Please help me solve this problem. The answer I got for this one is over 100%, 102% to be exact. I don't know if I worked it out right. Do you add all the scores and divide by h

Question 168662: Please help me solve this problem. The answer I got for this one is over 100%, 102% to be exact. I don't know if I worked it out right. Do you add all the scores and divide by how many scores there are?

What is the lowest score that Sam could earn on his next math test if he already has scores of 99, 87, 90, and 72 in his grade file and he wants to keep his course percentage above 90% Please show your work.
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
Your answer is correct:
.
Let x = "next" math test score
.
(99+87+90+72+x)/5 > 90
(348+x)/5 > 90
348+x > 450
x > 450-348
x > 102

RELATED QUESTIONS
What would be the solution for x in the rational equation: x^2/(x-3) = (x+2)/(2x-5) (answered by josgarithmetic)

What should be the value of k in 2x^4-5x^2+k so that x-5 is a zero? I kinda don't know (answered by josgarithmetic,Theo,ikleyn)

I have worked on this problem and I do not know where I'm going wrong but I know the... (answered by daleswift)

PLEASE HELP ME SOLVE THIS PROBLEM. (x2+5) = x+3 The answer is -2/3 but I don't know how (answered by AnlytcPhil,stanbon)

log5(x+2)-log5(10)= log5(100) im confused on how to solve this perticular question..... (answered by lwsshak3)

Some One please help to solve this There are 12 points in a plane of which 5 are... (answered by sudhanshu_kmr)

This deals with average rate of change. I got answers but I have a feeling that they are... (answered by solver91311)

I got 3 for the absolute minimum for f(x) = x^4 � 4x^3 � 5. Is that correct? Also, if (answered by solver91311)

Hi! I was wondering if you could help me with the following problem. Factor the... (answered by Earlsdon)