SSC GD Constable previous year question
A number is first decreased by 15% and then increased by 20%. The number so obtained is 78 more than the original number. The original number is:
Asked in SSC GD Constable 2025: 04 Feb 2025 Shift 1 · Quantitative Aptitude
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Correct answer: (A) 3900
Let the number be x. x×0.85×1.2 = 1.02x. 1.02x − x = 0.02x = 78, so x = 3900.
हिंदी में प्रश्न
एक संख्या को पहले 15% घटाया जाता है और फिर 20% बढ़ाया जाता है। इस प्रकार प्राप्त संख्या मूल संख्या से 78 अधिक है। मूल संख्या है:
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सही उत्तर: (A) 3900
मान लीजिए संख्या x है। x×0.85×1.2 = 1.02x। 1.02x − x = 0.02x = 78, अतः x = 3900।
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