Total kilocalories for carbohydrate=560kcal.
Given that
1 gram of carbohydrate = 4 kilocalories of energy
Therefore Kilocalories on carbohydrate on foods eaten
Pizza= 45g carb x 4=180
Cola = 51 g carbx 4=204
Ice cream =45g carb x 4=180
Total kilocalories for carbohydrate=564 rounding to the tens place becomes 560kcal.
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