Sachin’s salary was first reduced by 16% and subsequently raised by 10%. What percentage was his final salary lower compared to his initial salary?

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RRB NTPC Graduate Level CBT-I Official Paper (Held On: 06 Jun, 2025 Shift 1)
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  1. 16%
  2. 7.6%
  3. 1.6%
  4. 10%

Answer (Detailed Solution Below)

Option 2 : 7.6%
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Detailed Solution

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Given:

Sachin's initial salary = 100 (assume as base for simplicity)

Reduction percentage = 16%

Subsequent increase percentage = 10%

Formula used:

Final Salary = Initial Salary × (1 - Reduction Percentage) × (1 + Increase Percentage)

Percentage decrease = ((Initial Salary - Final Salary) / Initial Salary) × 100

Calculation:

Final Salary = 100 × (1 - 0.16) × (1 + 0.10)

⇒ Final Salary = 100 × 0.84 × 1.10

⇒ Final Salary = 92.4

Percentage decrease = ((100 - 92.4) / 100) × 100

⇒ Percentage decrease = (7.6 / 100) × 100

⇒ Percentage decrease = 7.6%

∴ The correct answer is option (2).

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