Final answer:
To find the number of calories consumed when a person eats between three quarters and one and a quarter cups of grapes, multiply half a cup by 30 calories (the number of calories in a quarter cup of grapes).
Step-by-step explanation:
To calculate the number of calories consumed when a person eats between three quarters and one and a quarter cups of grapes, you first need to find the range of the cup measurement. The difference between one and a quarter cups and three quarters of a cup is half a cup. Since there are 30 calories in a quarter cup of grapes, we can multiply half a cup by 30 to find the number of calories in the range of 3/4 to 1 1/4 cups.
0.5 cups x 30 calories per quarter cup = 15 calories.
Learn more about calorie consumption of grapes