Question
Download Solution PDFकिसी वस्तु का क्रय मूल्य 10% कम किया जाता है और फिर 20% की वृद्धि की जाती है। यदि अंतिम मूल्य ₹540 है, तो मूल क्रय मूल्य ज्ञात कीजिए।
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिया गया है:
क्रय मूल्य (C.P) में पहले 10% की कमी की जाती है।
क्रय मूल्य (C.P) में फिर से 20% की वृद्धि की जाती है।
अंतिम मूल्य = 540 रुपये
गणना:
मान लीजिए C.P = 100x
कमी के बाद क्रय मूल्य = 100x × (100 -10)% = 90x
वृद्धि के बाद क्रय मूल्य = 90x × (100 + 20)% = 108x
प्रश्नानुसार:
⇒ 108x = 540
⇒ x = 540/108 = 5
⇒ 100x = 5 × 100 = 500 रुपये
∴ सही उत्तर 500 है।
Alternate Methodगणना:
| वृद्धि/कमी | क्रय मूल्य | नया क्रय मूल्य |
| (- 10%) | 10 | 9 |
| (+20%) | 5 | 6 |
| अंतिम | 50 | 54 |
अब,
⇒ 54 इकाई = 540 रुपये
⇒ 1 इकाई = 540/54 = 10 रुपये
⇒ मूल क्रय मूल्य = 50 इकाई = 50 × 10 = 500 रुपये
∴ सही उत्तर 500 रुपये है।
Last updated on Jun 13, 2025
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