Posted by **completeidiot** on Thursday, September 20, 2012 at 9:18am.

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

- 7th Grade Math -
**bobpursley**, Thursday, September 20, 2012 at 10:31am
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.

- 7th Grade Math -
**Steve**, Thursday, September 20, 2012 at 11:48am
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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