SSC GD Constable previous year question
The price (per litre) of petrol increases by 50%. By what percent should its consumption be reduced such that the expenditure on it increases by 23% only?
Asked in SSC GD Constable 2025: 10 Feb 2025 Shift 1 · Quantitative Aptitude
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Correct answer: (A) 18%
New expenditure = 1.5 × (1-x) = 1.23, so (1-x) = 1.23/1.5 = 0.82, so x = 0.18 = 18%.
हिंदी में प्रश्न
पेट्रोल की कीमत (प्रति लीटर) में 50% की वृद्धि होती है। इसकी खपत में कितने प्रतिशत की कमी की जानी चाहिए ताकि इस पर व्यय केवल 23% ही बढ़े?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (A) 18%
नया व्यय = 1.5 × (1-x) = 1.23, इसलिए (1-x) = 1.23/1.5 = 0.82, इसलिए x = 0.18 = 18%।
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