Final answer:
To find the percentage of weight Marshall's dog needs to lose, subtract the ideal weight from the current weight and divide by the current weight, then multiply by 100. It is approximately 8.54% of the dog's current weight.
Step-by-step explanation:
The subject of this question is mathematics, specifically involving percentages, which is often taught in middle school. To calculate what percent of Marshall's dog's weight needs to be lost, we find the difference between the current weight and the ideal weight, and then find what percentage that difference is of the current weight. Here are the steps:
- Find the difference in weight: 82 pounds - 75 pounds = 7 pounds.
- Calculate the percentage: (7 pounds / 82 pounds) * 100 = approximately 8.54%.
Therefore, Marshall's dog needs to lose approximately 8.54% of its current weight to reach the ideal weight of 75 pounds.