SSC GD Constable previous year question
The price of petrol increases by 40% (per litre). By what percentage should its consumption be reduced so that the expenditure on it increases by only 19%?
Asked in SSC GD Constable 2025: 07 Feb 2025 Shift 2 (Afternoon) · Quantitative Aptitude
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Correct answer: (A) 15%
(1+0.4)(1−x) = 1.19 → 1.4(1−x) = 1.19 → 1−x = 0.85 → x = 15%.
हिंदी में प्रश्न
पेट्रोल के मूल्य (प्रति लीटर) में 40% की वृद्धि होती है। इसकी खपत में कितने प्रतिशत की कमी कर दी जाए कि इस पर होने वाले व्यय में केवल 19% की वृद्धि हो?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (A) 15%
(1+0.4)(1−x) = 1.19 → 1.4(1−x) = 1.19 → 1−x = 0.85 → x = 15%।
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