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1 gram of carbohydrate = 4 Calories; 1 gram of protein = 4

Calories; and 1 gram of fat = 9 Calories. If you eat 250 grams of a

food which is 25% fat, 35% protein and 40% carbohydrate, how many

total calories did you consume?

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Transcript

He well, this is instructing of coal were trying to determine the total calories in this sample of food, which has a mass of 250 grams total, and we’re told that 25 percent of this sample is fat. So i’ve just written that as a decimal .25 times 250 to determine the grams which is 62.5 and then based on a percentage of 35 percent protein times. The 250 grams gives us 87.5 grams of protein and .4 percent .40 percent or .40 for carb times 250 gives us 100 gram and then we’re going to just multiply by the number of calories per gram that is given also in your problem so for fat. That is 9, so if we just use a calculator and do 62.5 times 9, you should get 562.5. Similarly, for…

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