alleryRs 30/kg দরের 40 kg চালের সাথে Rs 36/kg দরের 20 kg চাল মেশানো হলো; মিশ্রণটি Rs 36/kg দরে বিক্রি করা হয়। লাভ কত?
A12.5%
B15%
C10%
D20%
Answer & Solution
Correct answer: A. 12.5%
60 kg-এর ক্রয়মূল্য হলো 1200 + 720 = 1920, অর্থাৎ Rs 32/kg; 36 দরে বিক্রি করলে লাভ হয় 4/32 = 12.5 শতাংশ।
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