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 ...

Question 1128684: 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) (Show Source): You can put this solution on YOUR website!
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How many of WHAT ?

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