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secondary 2 | Maths
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hi how to do this?
Date Posted: 1 year ago
Views: 155
Let the total number of boys be n and the total number of girls be 2n.
Total mass of girls: 52 times 2n, or 104n
Total mass of boys: 61 times n, or 61n
Total mass of students: 165n
Total number of students: 3n
Mean mass of all students
= 165n / 3n
= 55 kg
Total mass of girls: 52 times 2n, or 104n
Total mass of boys: 61 times n, or 61n
Total mass of students: 165n
Total number of students: 3n
Mean mass of all students
= 165n / 3n
= 55 kg
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Hope this helps! ;))
Date Posted:
1 year ago
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