Here are several. Please select three that appeal to you:
kilometers per second
miles per hour
cubic feet per minute
gallons per second
Hertz
gigahertz
furlongs per fortnight
dollars per ounce
cents per pound
bumps per inch
pascals
pounds per square inch
bushels per hectare
percent tax
miles per gallon
parts per million
grams per cubic centimeter
calories per gram
dollars per hour
euros per dollar
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A rate is a fraction that compares two quantities measured in different units. If the denominator of the fraction is 1 unit, the rate is called a unit rate.
Three units. The number is five hundreds, two tens and three units.
It is 202.48 units of currency.
Rate of change of speed. It can be the units for acceleration but need not be.
All three are ratios which do not have units.