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1. A shopkeeper expects a gain of 22.5% on his cost price. If in a week, his sale was of Tk. 392, what was his profit ?
- A. Tk. 18.20
- B. Tk. 18.20
- C. Tk. 18.20
- D. Tk. 18.20
Answer: Option C
Explanation:
ধরি, ক্রয়মূল্য x টাকা
x + x × 2.25/100 = 392
1.225x = 392
x = 392/1.225
= 392 ×1000 /1225
x = 320
লাভ = 392 - 320 = 72 টাকা
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