IBPS Clerk Prelims practice question
Deepak spends 30% of her monthly income on rent and 25% of the remaining on food. If Deepak saves ₹12,600 every month, what is the monthly income?
From a IBPS Clerk Prelims Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (B) ₹24,000
Let income = I. After rent: I × 70/100. After food: I × 70/100 × 75/100 = savings = ₹12,600. So I = ₹12,600 × 100/70 × 100/75 = ₹24,000. (Adding the percentages, 30% + 25% = 55%, is wrong because 25% applies to the remainder.)
हिंदी में प्रश्न
दीपक अपनी मासिक आय का 30% किराए पर और शेष का 25% भोजन पर खर्च करता/करती है। यदि दीपक हर महीने ₹12,600 बचाता/बचाती है, तो मासिक आय कितनी है?
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सही उत्तर: (B) ₹24,000
माना आय = I। किराए के बाद: I × 70/100। भोजन के बाद: I × 70/100 × 75/100 = बचत = ₹12,600। अतः I = ₹12,600 × 100/70 × 100/75 = ₹24,000। (प्रतिशत जोड़ना, 30% + 25% = 55%, गलत है क्योंकि 25% शेष पर लागू होता है।)
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