Final answer:
To determine the caloric content of 21 brownies, calculate the number of calories per brownie by dividing the total calories in a serving (50 calories) by the number of brownies per serving (3). Then multiply the calories per brownie by 21 to get the total calories for 21 brownies, which is 350 calories.
Step-by-step explanation:
The student asks how many calories are in 21 brownies when 3 brownies contain a total of 50 calories. To find the answer, you need to calculate the number of calories per brownie and then multiply that by the number of brownies in question, which is 21.
First, find out how many calories one brownie contains:
- 50 calories / 3 brownies = 16.67 calories per brownie (approximately).
Then, multiply the calories per brownie by the number of brownies:
- 16.67 calories per brownie x 21 brownies = 350 calories.
Therefore, 21 brownies would contain 350 calories.