Posted by **Nonofyerbusiness** on Wednesday, November 21, 2012 at 12:45pm.

Which ratios can form a proportion?

9/45, 8/40

8/12, 12/21

8/12, 12/15

9/22, 14/28

- Math -
**Ms. Sue**, Wednesday, November 21, 2012 at 12:48pm
9/45, 8/40

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