SSC GD Constable previous year question
The price of petrol increases by 60% per litre. By what percentage should its consumption be reduced so that the expenditure on it increases by only 12%?
Asked in SSC GD Constable 2025: 04 Feb 2025 Shift 2 (Afternoon) · Quantitative Aptitude
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Correct answer: (B) 30%
(1+0.60)(1−x) = 1.12 ⟹ 1.6(1−x) = 1.12 ⟹ 1−x = 0.7 ⟹ x = 0.30 = 30%.
हिंदी में प्रश्न
पेट्रोल के मूल्य में (प्रति लीटर) 60% की वृद्धि होती है। इसकी खपत में कितने प्रतिशत की कमी कर दी जाए कि इस पर होने वाले व्यय में केवल 12% की वृद्धि हो?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (B) 30%
(1+0.60)(1−x) = 1.12 ⟹ 1.6(1−x) = 1.12 ⟹ 1−x = 0.7 ⟹ x = 0.30 = 30%।
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