The pie chart presents the percentage contribution of different macronutrients…
2024
The pie chart presents the percentage contribution of different macronutrients to a typical 2,000 kcal diet of a person.
The typical energy density (kcal/g) of these macronutrients is given in the table.
MacronutrientEnergy density (kcal/g) Carbohydrates 4 Proteins 4 Unsaturated fat 9 Saturated fat 9 Trans fat 9
The total fat (all three types), in grams, this person consumes is
- A.
44.4
- B.
78.4
- C.
100
- D.
3,600
Attempted by 4 students.
Show answer & explanation
Correct answer: C
Key insight: total fat contribution is the sum of unsaturated, saturated and trans fats.
Step 1: Add the fat percentages: 20% (unsaturated) + 20% (saturated) + 5% (trans) = 45% of total energy.
Step 2: Find calories from fat: 45% of 2000 kcal = 0.45 × 2000 = 900 kcal.
Step 3: Convert to grams using fat energy density: 900 kcal ÷ 9 kcal/g = 100 g.
Answer: This person consumes 100 g of total fat.
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