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If the amounts are measured in different units you may wish to convert them to the same unit. This may not always be desirable or practical (see below). Then you just divide one of the amounts by the other. If the measurement units are the same then the ratio is a pure number. If not, it has a derived unit of measurement.
For example,
- 240 km in 3 hours is 240/3 = 80 km per hour. You cannot convert these to the same measurement unit.
- a map in which 1 cm represents 2 km has a scale of 1/2 cm per km or 1 cm to 200000 cm. Since the latter is now in the same units, it can be written simply as 1:200000.
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A comparision of two amounts using division?
ratio
The ratio of output work to input work is?
efficiency
Is ratio a noun?
Yes, ratio is a noun, a singular, common, abstract noun; a word for the relation between two amounts or numbers, a thing.
Who should use the dependency ratio?
The dependency ratio should be used to asses how well the labor or work force supports those who do not work in relation to other countries or regions.
What is the ratio of copper to tin in bronze?
There are many different alloys containing mainly copper, some tin and small amounts of other elements. There is, therefore, no precise answer. Generally, though, the ratio of copper to tin will be 997:3
