Question

please help me to answer the question ​

Answer 1

Answer:

1. 1:3::1:3

They are in proportion

2. 1:11::1:11

They are in proportion

3. 1:12::1:25

They are not in proportion

4. 2:3::2:3

They are in Proportion

5. 3:4::3:4

They are in Proportion

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