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.
Macronutrient Energy 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
Options:
(A) 44.4
(B) 77.8
(C) 100
(D) 3,600
Carbohydrates
35%
Proteins
20%
Unsaturated fat
20%
Saturated fat
20%
Trans
fat
5%
Macronutrient energy contribution
Official Answer Key:
C
Step-by-Step Solution & Explanation
### **Official Solution & Concept Analysis (GATE BT 2024 Q.8)**
**1. Governing Concept**:
- **Topic**: Data Interpretation & Nutritional Energy Calculation
- Total energy = $2000\text{ kcal}$.
- Trans fat contribution = $5\%$ of $2000\text{ kcal} = 100\text{ kcal}$.
- Question asks for the energy contributed by trans fat in kcal.
$\text{Energy} = 2000 \times 0.05 = 100\text{ kcal}$
**2. Option Analysis**:
- **Option (A) [44.4] is INCORRECT**: Represents grams of fat if converted by 9 kcal/g incorrectly.
- **Option (B) [77.8] is INCORRECT**: Distractor.
- **Option (C) [100] is CORRECT**: Directly $5\%$ of $2000\text{ kcal} = 100\text{ kcal}$.
- **Option (D) is INCORRECT**: Distractor text.
**3. Final Answer**:
- **Correct Choice**: **C**
Practice This in Real CBT Exam Interface
Test yourself with the official TCS-iON palette, virtual calculator, and immediate performance analytics.