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primary 5 | Maths
| Rate & Ratio
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How to do ? Xie Xie
Date Posted: 3 years ago
Views: 434
Jeremy have 6 friends.
The difference in total marks = 15+6 = 21 marks.
The difference in average marks = 90-87 = 3
∴ Number of people = 21÷3 = 7
Therefore, Jeremy have 6 friends.
The difference in total marks = 15+6 = 21 marks.
The difference in average marks = 90-87 = 3
∴ Number of people = 21÷3 = 7
Therefore, Jeremy have 6 friends.
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Date Posted:
3 years ago
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