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III. Directions: Solve whether each set is proportion or not. Write yes or No. (1 point each)
11. 10:15 - 20: 20
12. 4:16 = 5:17
13. 2:10 = 1:5
14. 1:9 = 4::36
15, 6:7 = 18:21​

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LHELHENGGO

Step-by-step explanation:

11. 10:15 - 20: 20 NO

12. 4:16 = 5:17 NO

13. 2:10 = 1:5 YES

14. 1:9 = 4::36 YES

15, 6:7 = 18:21 YES

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