Answer :

Rate is a ratio that compares two quantities of different units.

20 oz of juice for $4, miles per hour, cost per pound etc. are examples of rate.
AL2006
-- 36 miles per hour

-- $3.55⁹ per gallon

-- 8 hours per day

-- $7.35 per hour

-- $3.79 per pound

-- 20 children per 3rd grade classroom

-- 40 hours per week

-- 12 eggs per dozen