Final answer:
To find the time needed to burn off a 300 calorie cheeseburger, the calories burned per minute are calculated, and then the total calories are divided by this rate. Approximately 53.57 minutes are needed, and rounding to the nearest option gives us 60 minutes.
Step-by-step explanation:
Justin burns 28 calories for every 5 minutes walked. To determine how many minutes it takes to burn off a 300 calorie cheeseburger, we can set up a proportion since the relationship between calories burned and minutes walked is linear.
First, calculate the number of calories burned per minute:
- 28 calories / 5 minutes = 5.6 calories/minute
Then, use the calories per minute to find how many minutes it takes to burn 300 calories:
- 300 calories / 5.6 calories/minute = approximately 53.57 minutes
Since we want to find the closest whole minute, we can round up to the nearest multiple of 5, so Justin needs to walk for approximately 55 minutes, which is not one of the options provided. However, the closest answer option is 60 minutes (Option D), which is slightly more than needed but is the best choice given the options.