Question
Download Solution PDFएक संख्या प्रथम 20% ने कमी केली जाते आणि नंतर 15% ने वाढविली जाते. त्यामुळे मिळालेली संख्या ही मूळ संख्येपेक्षा 64 ने कमी आहे. मूळ संख्या काय होती?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिलेले आहे:
एक संख्या प्रथम 20% ने कमी केली जाते आणि नंतर 15% ने वाढविली जाते.
त्यामुळे मिळालेली संख्या ही मूळ संख्येपेक्षा 64 ने कमी आहे
गणना:
समजा ती संख्या 100x आहे
20% घटल्यानंतरची संख्या = 100x - 100x च्या 20%
⇒ 80x
15% वाढीनंतरची संख्या = 80x + 80x च्या 15%
⇒ 92x
प्रश्नानुसार
100x - 92x = 64 (मूळ आणि नवीन संख्येतील फरक)
⇒ 8x = 64
⇒ x = 8
मूळ संख्या = 100x = 800
∴ योग्य निवड पर्याय 2 आहे.
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