Nashreen's answer to Pooh pooh bear's Primary 6 Maths question.
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For Green buttons I split the model into 2. You have to remember that 3/4 of A + 3/4 of B = 3/4 of (A+B). By doing this, you can work with equal units of green and yellow buttons. Hence 1u + 20 green buttons remained, while 2u yellow buttons remained after.
Date Posted:
6 years ago
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