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SSC GD 2025 PYQ — Question 52

SSC GD Const 2025 (English) - 13 Feb 2025 - Shift 2 • Quantitative Aptitude • Q52

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The price of fuel decreases by 40%, 30% and 10% in three successive months, but increases by 40% in the fourth month. What is the percentage increase/decrease in the price of fuel in the fourth month as compared to its original price?

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Correct answer: D

Explanation

The correct answer is Option 4 i.e.  Decreases by 47.08%.

Let the orginal price = 100

So, 

= 100 × 100−40100\frac{100-40}{100} × 100−30100\frac{100-30}{100} × 100−10100\frac{100-10}{100} × 100+40100\frac{100+40}{100}

= 100 × 0.6 × 0.7 × 0.9 × 1.4

= 52.92

% Decrease = 100 - 52.92 = 47.08%