Question
Download Solution PDFচিনির দাম 30% বেড়ে যায়। সীতাকে তার খরচের কত শতাংশ কমাতে হবে যাতে ব্যয় না বাড়ে?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFপ্রদত্ত:
চিনির দাম % বৃদ্ধি পেয়েছে = 25%
অনুসৃত সুত্র:
ব্যয় = মূল্য × পরিমাণ
গণনা:
ধরা যাক, চিনির প্রাথমিক খরচ ছিল 100 টাকা
এখন, দাম 30% বেড়ে গেছে
নতুন দাম = (100 + 100 × 30%) = 130 টাকা
খরচ অপরিবর্তিত রাখার জন্য, 130 টাকা থেকে 30 টাকা কমাতে হবে।
⇒ 130 - 30 = 100
∴ খরচ কমে যাওয়ার পরিমাণ = 30/130 × 100 =
Shortcut Trick
100 → + 30% → 130 _____ - Y% → 100
এখন, Y = 30/130 × 100 =
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