Maria traveled at 60 miles per hour for the first two hour of the trip.She then traveled at a speed of 50 miles per hour for the rest of the trip.The avarage speed of the trip is 54 miles per hour.How long was the whole trip in hoursMaria traveled at 60 miles per hour for the first two hour of the trip.She then traveled at a speed of 50 miles per hour for the rest of the trip. The avarage speed of the trip is 54 miles per hour.How long was the whole trip in hours