Write YES if the following ratios are equivalent ratios and No if its not.
11.) 6:1 and 12:1
16.) 6:12 and 12:18
12.) 8:6 and 4:3
17.) 15: 3 and 8:17
13.) 18:27 and 1:3
18.) 6:8 and 9:12
14.) 4:2 and 20:5
19.) 7:14 and 1:2
-
15.) 2:1 and 2:4
20.) 6:2 and 1:18​