annissa chan's answer to Swag's Primary 4 Maths Singapore question.
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By model method, in the beginning, Bala has 3 units and David 1 unit only.
This means their initial difference was 3-1=2 units.
These 2 units were nullified, hence 2 units = 4+6 = 10
number of goldfish Bala had in the beginning is 3/2 x 10 = 15
hope this helps:))
This means their initial difference was 3-1=2 units.
These 2 units were nullified, hence 2 units = 4+6 = 10
number of goldfish Bala had in the beginning is 3/2 x 10 = 15
hope this helps:))
Date Posted:
3 years ago
Thank you
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