Adwin's answer to Ardy's Primary 6 Maths Data Analysis Singapore question.
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We know that the average of 1st and 2nd numbers is 3 times the average of the 3rd and 4th numbers.
Students should be able to infer that this means that the sum of the 1st and 2nd numbers is also 3 times that of the sum of the 3rd and 4th numbers. Since both sides will be multiplied by the same amount to find the sum (×2).
Students should be able to infer that this means that the sum of the 1st and 2nd numbers is also 3 times that of the sum of the 3rd and 4th numbers. Since both sides will be multiplied by the same amount to find the sum (×2).
Date Posted:
4 years ago
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