Which of the following situations forms a proportional relationship? Select all that apply.
2 answers:
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14, 15, 20 | 2
7, 15, 10 | 2
7, 15, 5 | 3
7, 5, 5 | 5
7, 1, 1 | 7
1, 1, 1
Answer: × 3 × 5 × 7 = 420
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