Respuesta :

Plenty of samples around!

ft per sec                e. g., 88 ft / sec  = 60 mph
miles per hour        e. g., 55 mph
4 quarts = 1 gallon

All can be written in other ways, such as

1 gall
--------  This is a quarts - to - gallon conversion factor
4 qts

For further info, look up "unit rates" 
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