Bryan Yeo's answer to Donnalyn low's Primary 5 Maths Rate & Ratio Singapore question.
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90-35 is the difference in total price when the numbers of bags are the same.
35-30 is the difference in mean.
Difference in Mean x Bag = difference in Total Price.
Bag=difference in total price/difference in mean
35-30 is the difference in mean.
Difference in Mean x Bag = difference in Total Price.
Bag=difference in total price/difference in mean
Date Posted:
6 years ago
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