TAN YU HAO's answer to Jennifer Yeo's Secondary 1 Maths Singapore question.

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TAN YU HAO
Tan Yu Hao's answer
2 answers (Tutor Details)
Part A’s answer is 20,
Using the highest common factor among all three you’ll find 20

Part B’s answer is 3 and 5 respectively
Just divide the said items with answer from part A and you’d be able to find the answer for B