Phyllis Ong Jia Lee's answer to Pooh pooh bear's Primary 5 Maths question.

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Phyllis Ong Jia Lee
Phyllis Ong Jia Lee's answer
13 answers (Tutor Details)
The difference gives you 2 units. Hence, you can find 1 unit which is the mass of Box B. With that information, we can find Box A since we are given the total mass of Box A and B