SOLUTION: A student has test scores of 72, 76, and 78 points. What must he score on the fourth exam to have an average score s of at least 69 points?
Algebra.Com
Question 1047086: A student has test scores of 72, 76, and 78 points. What must he score on the fourth exam to have an average score s of at least 69 points?
Answer by addingup(3677) (Show Source): You can put this solution on YOUR website!
(72+76+78+x)/4 => 69
(226+x)/4 => 69 Multiply both sides times 4
226+x => 276
x = 50 If the student gets 50 on the fourth exam, the student would have an average of at least 69 points
RELATED QUESTIONS
A Student has test scores of 72, 80, 65, 78, and 60. If the final exam counts as... (answered by Edwin McCravy)
Before the final exam, a student has test scores of 72, 80, 65, 78, and 60. If the final... (answered by ankor@dixie-net.com)
A student has test scores of 68, 75 and 79. What must she score on the fourth exam to... (answered by harpazo)
A student has test scores of 68, 75 and 79. What must she score on the fourth exam to... (answered by harpazo)
Before the final exam,, a student has test scores of 72, 80, 65, 78, and 60. If the... (answered by checkley71)
Before the final exam, a student has 5 test scores of equal weight: 72, 80, 65, 78, and... (answered by ankor@dixie-net.com)
In Larry's school, a student must have an average of at least 80% to get a "B" in a... (answered by jorel555)
A student earned scores of 83, 78, and 77 on three of four test. What must the student... (answered by nerdybill)
The final grade for a class is calculated by taking 75% of the average test score and... (answered by fcabanski)