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The weighted average marks of 170 students who appeared in an exam is 55. It is also known that the average marks of failed students is 23 and that of passed students is 63. Find the number of students who passed the exam. |
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Answer» The weighted average marks of 170 students who appeared in an exam is 55. It is also known that the average marks of failed students is 23 and that of passed students is 63. Find the number of students who passed the exam. |
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