10:5
12:6
14:7
16:8
18:9
22:11
24:12
26:13
28:14
30:15
32:16
34:17
36:18
38:19
Answer:
5:1
Explanation:
You would divide 40:20 by 10 on both sides and it would be 10:2. You divide again by 2, to get 5:1.
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