Based on the given information on Anya and IIya, Ilya's average speed is approximately 4.68 mph.
How to calculate average speed
To find Ilya's average speed, determine the total time taken by Ilya to complete the 5.00-mile route and then calculate the average speed.
Given:
Ilya's running speed = 7.50 mph
Ilya's walking speed = 3.40 mph
Distance of the route = 5.00 miles
Anya walks half of the distance, which is 5.00 miles / 2 = 2.50 miles.
Since Ilya walks half of the time, he also walks 2.50 miles.
Now let's calculate the time taken by Ilya to walk and run each half of the distance:
Time taken to walk 2.50 miles = Distance / Speed = 2.50 miles / 3.40 mph
Time taken to run 2.50 miles = Distance / Speed = 2.50 miles / 7.50 mph
Next, calculate the total time taken by Ilya:
Total time taken by Ilya = Time taken to walk + Time taken to run
Now, calculate Ilya's average speed:
Average speed = Total distance / Total time taken
Total distance = 5.00 miles
Total time taken = Time taken to walk + Time taken to run
Substituting the values, we have:
Average speed = 5.00 miles / (Time taken to walk + Time taken to run)
Now calculate the time taken to walk and run:
Time taken to walk = 2.50 miles / 3.40 mph
Time taken to run = 2.50 miles / 7.50 mph
Substitute the values, we have:
Average speed = 5.00 miles / (2.50 miles / 3.40 mph + 2.50 miles / 7.50 mph)
Simplify the expression:
Average speed = 5.00 miles / (0.735 mph + 0.333 mph)
Average speed = 5.00 miles / 1.068 mph
Therefore, Ilya's average speed is approximately 4.68 mph.