SOLUTION: Sam has scores of 60, 55, 65, 75 on his first four algebra exams. What must he earn on the fifth exam to recieve a grade of 70% or higher at the end of the semester?

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Question 1111577: Sam has scores of 60, 55, 65, 75 on his first four algebra exams. What must he earn on the fifth exam to recieve a grade of 70% or higher at the end of the semester?
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
(x+60+55+65+75)/5=70
x+255=70*5
x=350-255
x=95%