allery840 চিহ্নিত এটা বস্তু 714-ত বিক্ৰী কৰা হয়। ৰেহাইৰ শতাংশ হ'ল:
A12%
B18%
C15%
D20%
Answer & Solution
Correct answer: C. 15%
1. টকাত ৰেহাই হৈছে চিহ্নিত মূল্য বিয়োগ বিক্ৰী মূল্য।
2. সেয়া হ'ল 840 - 714 = 126।
3. ৰেহাই শতাংশ সদায় চিহ্নিত মূল্যক ভিত্তি হিচাপে লৈ উলিওৱা হয়।
4. গতিকে এইটো 126 / 840 x 100।
5. ইয়াৰ পৰা 15 শতাংশ পোৱা যায়। ইয়াৰ পৰিৱৰ্তে বিক্ৰী মূল্যৰে হৰণ কৰিলে ভুলকৈ প্ৰায় 17.6 শতাংশ ওলাব।
_উৎস: syllabus Maths, Ch 7 'Comparing Quantities', S7.2 Finding Discounts_
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