The numerator of a fraction is increased by 30% and its denominator is decreased by 20%. The resulting fraction is 13/8. What was the original fraction? / किसी भिन्न के अंश में 30% की वृद्धि और हर में 20% की कमी की जाती है। प्राप्त भिन्न 13/8 है। मूल भिन्न क्या थी?
Answer and explanation are free to read — no sign-in required. / उत्तर और व्याख्या पढ़ने के लिए साइन-इन आवश्यक नहीं है।
Correct Answer / सही उत्तर
A. 1 / 1
Explanation / व्याख्या
Let original fraction = x. New fraction = x × 1.30/0.80 = 13x/8. Given 13x/8 = 13/8, therefore x = 1. / मूल भिन्न x मानें। नया भिन्न = x × 1.30/0.80 = 13x/8। चूँकि 13x/8 = 13/8, इसलिए x = 1।
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