Question

a car is traveling at a rate of 75 miles per hour. what is the car rate in miles per minute? how many miles will the car travel in 15 minutes? do not round your answers.

Answer 1

$\dfrac{75 miles}{hour} * \dfrac{1 hour}{60 minues} = \dfrac{1.25 miles}{minute}$

Now you want to set up a proportion.

1.25 miles:1 minute :: x : 15 minutes  Set up the proportion

$\dfrac{1.25 miles}{1 minute}= \dfrac{x }{15 minutes}$  Cross multiply

1.25 miles * 15 minutes = x * 1 minute

18.75 miles * minutes = x * 1 minute. Divide by minutes

x = 18.75 miles. Answer