Ong kok sin's answer to Julius's Primary 6 Maths question.

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Ong kok sin
Ong Kok Sin's answer
86 answers (Tutor Details)
Alan $1500
Bill $450
Julius
Julius
6 years ago
Thank you. I can follow your reasoning up to the statement on 9 units. I don't quite follow the logic for 8 units onwards.