RRB NTPC CBT-1 previous year question
The cost of an article is increased by 20% in the first year. In the second year the increased cost is decreased by 24%. If the final cost of the article is ₹1,938, find the original cost of the article.
Asked in RRB NTPC 2026 — 18 June Shift 3 · Quantitative Aptitude
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Correct answer: (C) ₹2,125
Let the original cost be P. After a 20% increase and a 24% decrease, P x 1.2 x 0.76 = 1938, so P x 0.912 = 1938, giving P = Rs.2,125.
हिंदी में प्रश्न
एक वस्तु की कीमत में प्रथम वर्ष में 20% की वृद्धि होती है। द्वितीय वर्ष में इस वृद्धि के बाद वाली कीमत में 24% को कमी होती Sl यदि वस्तु का अंतिम मूल्य ₹1,938 है, तो वस्तु की मूल कीमत ज्ञात कोजिए।
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सही उत्तर: (C) ₹2,125
मान लें मूल लागत P है। 20% वृद्धि और 24% कमी के बाद, P x 1.2 x 0.76 = 1938, अतः P x 0.912 = 1938, जिससे P = ₹2,125 प्राप्त होता है।
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