alleryএটা বস্তু 20% লোকচানত 15,000-ত বিক্ৰী কৰা হয়। ইয়াৰ ক্ৰয় মূল্য আছিল:
A12,000
B17,250
C18,750
D18,000
Answer & Solution
Correct answer: C. 18,750
1. 20 শতাংশ লোকচান মানে বিক্ৰী মূল্য ক্ৰয় মূল্যৰ 80 শতাংশ।
2. গতিকে ক্ৰয় মূল্যৰ 80 শতাংশ = 15000।
3. এক শতাংশ হ'ল 15000 / 80 = 187.5।
4. ক্ৰয় মূল্য হ'ল 100 x 187.5 = 18750।
5. 15000-ৰ লগত 20 শতাংশ যোগ কৰিলে 18000 পোৱা যায়, যিটো ভুল কাৰণ লোকচান ক্ৰয় মূল্যৰ ওপৰত গণনা কৰা হৈছিল, বিক্ৰী মূল্যৰ ওপৰত নহয়।
_উৎস: পাঠ্যক্ৰম Maths, অধ্যায় 7 'Comparing Quantities', S7.1 Recalling Ratios and Percentages_
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