Final answer:
It took Brandon 16 minutes to run the first 2 miles, 15 minutes to run the last 2 miles, and his overall time for the 4-mile race was 31 minutes.
Step-by-step explanation:
Part A: To calculate the time taken for the first 2 miles, we multiply the distance by the pace. 2 miles x 8 minutes/mile = 16 minutes.
Part B: To calculate the time taken for the last 2 miles, we again multiply the distance by the pace. 2 miles x 7.5 minutes/mile = 15 minutes.
Part C: To find the overall time for the 4-mile race, we simply add the times taken for the first 2 miles and the last 2 miles. 16 minutes + 15 minutes = 31 minutes.
Learn more about time taken to run a race