Diana usually drives at an average rate of 30 mph. Yesterday she drove for 2 hours and 40 minutes. What distance did she travel?

1 answer

First, we need to convert the 40 minutes into hours. There are 60 minutes in an hour, so 40 minutes is equal to 40/60 = 2/3 hours.
Now we can add the 2 hours and 2/3 hours together: 2 + 2/3 = 6/3 + 2/3 = 8/3 = 2 2/3.
Now we can multiply the total number of hours by Diana's average rate to find the total distance traveled: 30 mph * 2 2/3 hours = 60 + 20 = <<30*2+20=80>>80 miles. Answer: \boxed{80}.