Caroline drove 350 miles to get grandmother's house. The trip took 5 1/4 hours. What is her average speed in miles per hour?

66.666 mph or 66.67

Step-by-step explanation:

First I would change 1/4 to. 25 so the equation would look like this.

350 / 5.25 = 66.666 Continues so you could round it to the nearest hundredth.

You have R=unknown, something for which to solve;

T (total) = 5 1/4 hours

D (distance) = 350 miles.

Keep your calculations in miles per hour.

Distance : Time

350 : 5 1/4 (need to make the whole number a fraction and need to make mixed number a fraction)

350/1 : 21/4=

350/1 * 4/21 = 1400 / 21 = 66 2/3