Question

A bus travels 36 miles in 45 minutes. Enter the number of miles the bus travels in 60 minutes at this rate.

Answer 1

$\bf \begin{array}{ccllll} miles&minutes\\ \textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\ 36&45\\ x&60 \end{array}\implies \cfrac{36}{x}=\cfrac{45}{60}$

solve for "x"

Answer 2

A rate is a special ratio in which the two terms are in different units. A rate is a little bit different than the ratio, it is a special ratio. For this case, the rate would have units of miles per minutes. We calculate as follows:

rate = 36 miles / 45 min = 0.8 miles per min
distance traveled = 0.8 miles per min ( 60 min ) = 48 miles