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A salesman usually makes 25% profit on every radio he sells. During a sale, he reduces his profit margin to 20%, while his sales increase by 10%. What is the radio of his new profit to his usual profit?

A. 10:25
B. 11:15
C. 22:25
D. 20:25
E. None of these
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Exim Bank Ltdসাধারণ গণিতসাধারণ ও যৌগিক মুনাফাসাধারণ মুনাফা (I=PRN) (Topic Practice)Exim Bank Ltd - ⚡ অনলাইন প্রশ্নব্যাংক দেখুন 💥
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সঠিক উত্তরঃ C. 22:25
Explanation: