We have been working on ratios. We have 17 grapes and 34 dogs. The two ratios are separated by a colon or could written as 17 to 34 or 17/34. So we have a ratio of 17:34 and the reason that 17 is first in the ratio is because it was mentioned first and 34 for was mentioned last so it was put last in the ratio. A ratio can also be written as a fraction 17/34 then as an equivalent fraction which is 1/2 as 17 out of 34 is half.
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