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II. Determine whether each is a proportion or not write YES or No on the space provided.
11.4/5 5/2
12.6/9 = 2/3
13.10/12 = 5/6
14.8/15=8/19
1530/9=10/3
16.3:7 = 21:40
17.6:5 = 12:10
18.4:20=6:25
19.18:25=6:5
20.20:25 = 40:50​