SOLUTION: average mark of those who passed was 64%, and of those who failed 43%. If the average mark of the 840 students who participated was 58%, how many ...

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: average mark of those who passed was 64%, and of those who failed 43%. If the average mark of the 840 students who participated was 58%, how many ...      Log On


   

Question 1128685: average mark of those who passed was 64%, and of those who failed 43%. If the average mark of the 840 students who participated was 58%, how many ...
Answer by ikleyn(52814) About Me  (Show Source):
You can put this solution on YOUR website!
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See my answer under this link

https://www.algebra.com/algebra/homework/Percentage-and-ratio-word-problems/Percentage-and-ratio-word-problems.faq.question.1128684.html

https://www.algebra.com/algebra/homework/Percentage-and-ratio-word-problems/Percentage-and-ratio-word-problems.faq.question.1128684.html