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?
Algebra.Com
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) (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%
RELATED QUESTIONS
Sam has scores of 60,55,65,75 on his first four algebra exams. What must he earn on the... (answered by Alan3354,math_helper)
Thanh has scores of 57, 85, 67, and 75 on his first four math exams. What score must he... (answered by JBarnum)
A students must gain an average score of at least 92 of five 100 point exams to earn a... (answered by lynnlo)
An average grade of 80 on all exams in a course is needed to earn a B in the course. On... (answered by josgarithmetic,ikleyn,greenestamps)
A course consits of four 100 point exams. A student scores 60 points on the first exam.... (answered by josmiceli)
On four exams Bobs grades were 79, 93, 91, and 68. What grade must he obtain on his fifth (answered by oscargut,rfer)
Joe has scores of 94, 71, 89, 73 on his first four exams in his math class. He wants to... (answered by Maths68)
To receive a grade of A, the average of four 100-point exams must be 90 or better. If a... (answered by ReadingBoosters)
Fifty four percent of the students grade will come from regular exams, 30% from the final (answered by Fombitz)