Question 1111672
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"rate" = "ratio" = "fraction"<br>
20km in 1 hour as a rate (fraction) is {{{20km/1hr}}} = 20km/1hr = 20km/hr.<br>
Note in everyday life we express speed as a ratio of distance traveled per unit time, so 20km/hr is usually the way we would express the rate in this example.<br>
But there might be applications where we wanted to use an expression for the amount of time it would take to go a certain distance; so with this example we could also express the rate (fraction) as {{{1hr/20km = ((1/20)hr)/1km}}}.<br>
The usual rate tells us we go 20km in 1 hour; this rate would tell us that it takes 1/20 hour to go 1 kilometer.