Question:
Balanced diet should contain 12% of proteins, 25% of fats and 63% of carbohydrates. If a child needs 2600 calories in his food daily, find in calories the amount of each of these in his daily food intake.
Solution:
Amount of protein $=12 \%$ of 2600
$=\left(2600 \times \frac{12}{100}\right)$
$=312 \mathrm{cal}$
Amount of fat $=25 \%$ of 2600
$=\left(2600 \times \frac{25}{100}\right)$
$=650 \mathrm{cal}$
Amount of carbohydrate $=63 \%$ of 2600
$=\left(2600 \times \frac{63}{100}\right)$
$=1638 \mathrm{cal}$
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