Final answer:
The average speed for Sam and Jesse's trip to the concert is calculated by adding the total distance traveled (220 kilometers) and dividing it by the total time taken (3.5 hours). The result is approximately 62.86 km/h, which means their average speed is closest to 60 km/h (Option B).
Step-by-step explanation:
The question revolves around finding the average speed at which Sam and Jesse traveled to a concert. To calculate the average speed, we need to know the total distance traveled and the total time taken for the trip.
Firstly, they covered 80 kilometers in 1 hour on the freeway. Next, they traveled 110 kilometers taking 2 hours on a different highway. Lastly, they took a road for 30 kilometers which took them 0.5 hours. Summing up the distances gives us a total of 80 km + 110 km + 30 km = 220 kilometers. Adding up the time gives us 1 hour + 2 hours + 0.5 hours = 3.5 hours.
Now, to find the average speed, we divide the total distance by the total time:
Vavg = Total Distance / Total Time = 220 km / 3.5 h = 62.86 km/h.
Since we need to choose the closest option, the average speed for their trip is approximately 60 km/h (Option B).