Consider the car-caravan analogy from Section 4 in Chapter 1. In this problem, assume a propagation speed of 90 km/hr and that each toll booth takes 6 seconds to service a car.

A) Suppose the caravan of 10 cars begins immediately in front of the first toll booth, travels 30 km to a second toll booth, then another 70 km to a third toll booth, and finally stops immediately after the third tool booth. Thus, they travel a total of 100 km. What is the total end-to-end delay?

B) Where is the last car in the caravan after 30 minutes? Your answer must include a distance/specific location, and not only a relative direction.

THIS IS WHAT I HAVE FOR PART A:

PROPAGATION SPEED: 90 KM/HR

SERVICE: 6 SECONDS AT TOLL BOOTH

NUMBER OF CARS: 10

DISTANCE TO SECOND TOLL BOOTH: 30 KM

DISTANCE TO THIRD TOLL BOOTH: 70 KM

FULL DISTANCE TRAVELED: 100 KM

100KM X 90KM/HR = 1.11 HOURS

1.11 HOURS X 60 MIN/HR = 66.66 MIN

A)TOTAL TIME FOR 10 CARS AT 1 BOOTH IS 60 SECONDS OR 1 MINUTE

TOTAL TIME FOR 10 CARS AT 3 BOOTHS IS 180 SECONDS OR 3 MINUTES

THE END TO END TIME IS 66.66 MINUTES + 3 MINUTES = 69.66 MINUTES

I REALLY NEED HELP WITH PART B******************