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Anonymous
2 to 3.
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The ratio of 18 to 12 (18:12) = 3:2 = 1.5 people per chair
It is: 18 to 12
The ratio of 5 and 7 8 and 9 12 and 18 85 and 170 is 5:7/8:9/12:18/85:170.
9:6 6:4