The numerator of a fraction is increased by 20% and its denominator is decreased by 25%. The resulting fraction is 8/9. What was the original fraction? / किसी भिन्न के अंश में 20% की वृद्धि तथा हर में 25% की कमी करने पर प्राप्त भिन्न 8/9 हो जाता है। मूल भिन्न क्या था?
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
B. 5/9 / 5/9
Explanation / व्याख्या
Let original fraction = x. The new fraction = x × 1.20/0.75 = 1.6x. Therefore 1.6x = 8/9, giving x = (8/9) × (5/8) = 5/9. / मूल भिन्न x मानें। नया भिन्न = x × 1.20/0.75 = 1.6x। अतः 1.6x = 8/9 से x = 5/9।
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