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Hello:

An example of a common rate is miles per hour as in 60 miles per hour.

Is the following example considered a rate even though one of the units is not a unit of measure?

A department store has on sale four tires for $240, 4 tires/$240. Is this example still a rate? "Dollars is a unit of measure but "tires" is not.

I thank you for your reply.

kenneth~

four tires for $240 can be written as $240 per four tires or $60 per tire which is a rate by the definition found in wikepedia

"a rate of change can be specified per unit time, or per unit of length or mass or ANOTHER QUANTITY.

Professor Wallin

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