It could be that: 5 to 20 is equivalent 1 to 4
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They are: 2 to 5, 6 to 15 and 8 to 20
They are: 5 to 6, 10 to 12 and 15 to 18
5/10 = 1/2 write the proportion as ratios 5:10 = 1: 2 5/10 = 10/20 or 5:10 = 10:20 5/10 = 15/30 or 5:10 = 15:30
There are infinitely many equivalent ratios to 15:5, eg 12:4, 30:10, 45:15, 60:20 The simplest form of the ratio is 15:5 = (3×5):(1×5) = 3:1
yes