The price of a jewel, passing three hands, rises on the whole by 65%. If the first and second sellers earned 20% and 25% profit respectively, find percentage profit earned by the third seller.एक आभूषण का मूल्य तीन हाथों से गुजरने पर कुल मिलाकर 65% बढ़ जाता है। यदि पहले और दूसरे विक्रेता ने क्रमशः 20% और 25% लाभ अर्जित किया, तो तीसरे विक्रेता द्वारा अर्जित प्रतिशत लाभ ज्ञात कीजिए।
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Correct answer: A. 10 %
Explanation
Let the third seller's profit be x%. Then 1.20 × 1.25 × (1 + x/100) = 1.65. Since 1.20 × 1.25 = 1.50, we get 1 + x/100 = 1.65 ÷ 1.50 = 1.10, so x = 10 %.मान लीजिए तीसरे विक्रेता का लाभ x% है। तब 1.20 × 1.25 × (1 + x/100) = 1.65. चूँकि 1.20 × 1.25 = 1.50, अतः 1 + x/100 = 1.65 ÷ 1.50 = 1.10, इसलिए x = 10 %।More Mathematical Reasoning and Aptitude questions
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