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How do you identify whether a ratio is a rate??? Thank you for all help.

examples of ratios are rates:

36miles/gallon

2inches/year
4cups/recipe
546mg Salt/DoubleCheesburger
4inches rise/10ft horizonal
all those are ratios, and rates.

Actually, thinking on it, I cant think of a ratio what could not be a rate.

whenever there are not two distinct units, it would not be a rate, since there is no "per" involved

6m/3 = 2m, a length, not a rate
3/7 is a number, not a rate

C/d = pi, a number, not a rate, since both top and bottom have the same unit (length)

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