SOLUTION: The marks of 7 students in a test are 88, 75, 93, 98, 27, 80, and 36. If 8 students sat the test and the average mark was 65, what score did the eighth student achieve on the test?

Question 1039742: The marks of 7 students in a test are 88, 75, 93, 98, 27, 80, and 36. If 8 students sat the test and the average mark was 65, what score did the eighth student achieve on the test?

Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
The marks of 7 students in a test are 88, 75, 93, 98, 27, 80, and 36.
If 8 students sat the test and the average mark was 65, what score did the eighth student achieve on the test?
:
let x = the score of the 8th student
:
= 65
add em up and multiply both sides by 8
497 + x = 520
x = 520 - 497
x = 23 is the score of the 8th student
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