Michelle Theseira's answer to Cherlene wong's Primary 3 Maths Singapore question.
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Key is to draw the model out and visually understand that Garrett is thrice Sebastian’s age, which works out the ratio of 1:3 within the model.
Although he is three times older, the difference is the same which is 24 years (equivalent to 2 units in the model).
Thus, divide that by two to find out how many years is one unit. Hope this helps!
Although he is three times older, the difference is the same which is 24 years (equivalent to 2 units in the model).
Thus, divide that by two to find out how many years is one unit. Hope this helps!
Date Posted:
3 years ago
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