Assume 100 g of chip snack:
g carbohydrates = 100  (14 + 16) = 70 g
$\mathbf{\%}\mathbf{Cal}\mathbf{}\mathbf{fat}\mathbf{=}\frac{\mathbf{Cal}\mathbf{}\mathbf{fat}}{\mathbf{total}\mathbf{}\mathbf{Cal}}\mathbf{\times}\mathbf{100}$
$\mathbf{total}\mathbf{}\mathbf{Cal}\mathbf{=}\mathbf{16}\mathbf{}\overline{)\mathbf{g}}\mathbf{\times}\frac{\mathbf{9}\mathbf{}\mathbf{Cal}}{\overline{)\mathbf{g}}}\mathbf{+}\mathbf{14}\mathbf{}\overline{)\mathbf{g}}\mathbf{\times}\mathbf{}\frac{\mathbf{4}\mathbf{}\mathbf{Cal}}{\overline{)\mathbf{g}}}\mathbf{+}\mathbf{70}\mathbf{}\overline{)\mathbf{g}}\mathbf{\times}\mathbf{}\frac{\mathbf{4}\mathbf{}\mathbf{Cal}}{\overline{)\mathbf{g}}}\mathbf{=}$480 Cal
Table 5.5: Compositions and Fuel Values  

A particular chip snack food is composed of 14 % protein, 16 % fat, and the rest carbohydrate. What percentage of the Calorie content of this food is fat?
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