Question
Download Solution PDFयदि नमक का मूल्य 20% कम हो जाता है, तो व्यय को समान रखने के लिए खपत में कितने प्रतिशत की वृद्धि की जानी चाहिए?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिया गया है:
यदि नमक का मूल्य 20% कम हो जाता है,
गणना:
माना 100 इकाई नमक का वास्तविक मूल्य 100 रुपये है।
अब नमक की 100 इकाइयों का मूल्य = 100 - 100 × 20% = 80 रुपये
अब 100 रुपये में प्राप्त नमक की मात्रा = 100/80 × 100 = 125 ग्राम
अब, खपत में % वृद्धि = \(\frac {125 - 100}{100} \times 100\%\) = 25%
∴ व्यय को समान रखने के लिए खपत में 25% की वृद्धि की जानी चाहिए।
Shortcut Trick नमक की कीमत 20% घट जाती है, पहले : बाद = 5 : 4
व्यय को समान बनाने के लिए, खपत पहले : बाद में = 4 : 5 होनी चाहिए
तो, खपत में 1/4 × 100 = 25% की वृद्धि हुई
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