A number is 30% less than another number. By what percentage is the second number greater than the first? / एक संख्या दूसरी संख्या से 30% कम है। दूसरी संख्या पहली संख्या से कितने प्रतिशत अधिक है?
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. 42 6/7% / 42 6/7%
Explanation / व्याख्या
Let the second number = 100. Then the first number = 70. Required percentage = (100 − 70)/70 × 100 = 30/70 × 100 = 42 6/7%. / दूसरी संख्या 100 मानें, तो पहली संख्या 70 होगी। प्रतिशत अधिक = 30/70 × 100 = 42 6/7%।
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