Final answer:
To calculate the number of bandages Mr. Kershner should order for March through June, we add up the average number of bandages used for each month and the number of bandages needed for June. The total number of bandages needed is 168.
Step-by-step explanation:
To calculate the number of bandages Mr. Kershner should order for March through June, we need to calculate the total number of bandages used for each month and add them together. In March, the average number of bandages used is 24. In April, the average number of bandages used is also 24. In May, the average number of bandages used is 24. In June, Mr. Kershner needs 4 times the average number of bandages, which is 24 x 4 = 96 bandages. Adding up these numbers, the total number of bandages needed for March through June is 24 + 24 + 24 + 96 = 168 bandages.