A family drives 4 1/2 miles in 1/10 of an hour. What is their rate of speed in miles per hour? speed = _____ miles per hour

To find the rate of speed in miles per hour, you can use the formula:

[ text{Speed} = frac{text{Distance}}{text{Time}} ]

In this case, the family drives 4.5 miles in 0.1 hours.

Now, substituting the values into the formula:

[ text{Speed} = frac{4.5 text{ miles}}{0.1 text{ hours}} ]

Calculating this:

[ text{Speed} = 45 text{ miles per hour} ]

So, the family’s rate of speed is 45 miles per hour.