Final answer:
Sally's average speed in traffic is 4.72 miles per hour.
Step-by-step explanation:
To find Sally's average speed in traffic, we need to first calculate the time she spent driving in traffic. We know that she drove 24 miles in traffic before it cleared and then drove another 295 miles. The total distance she traveled is 24 + 295 = 319 miles. The total trip took 6 hours, so the time spent driving in traffic is 6 - (295 / 319) = 5.08 hours.
To calculate the average speed in traffic, we use the formula:
Average speed = total distance / total time
Average speed in traffic = 24 miles / 5.08 hours = 4.72 miles per hour.