Ashifur August 8, 2023 - 16:36
Problem: A loss of 15% is incurred by selling a watch for Tk. 612. How much is the sum of money by which it is sold to make a profit of 10%?

View all: BANGLADESH BANK | ASSISTANT DIRECTOR | WRITTEM QUESTION SOLVE (MATH) | 2009

Correct Answer: ৭৯২ টাকা

Explanation:

ধরি, ঘড়িটির ক্রয়মূল্য ১০০ টাকা ।

১৫% ক্ষতিতে ঘড়িটির বিক্রয়মূল্য= ১০০ – ১৫ = ৮৫ টাকা

বিক্রয়মূল্য ৮৫ টাকা হলে ঘড়িটির ভ্রয়মূল্য – ১০০ টাকা

বিক্রয়মূল্য ৬১২ টাকা হলে ঘড়িটির ক্রয়মূল্য = $\frac{১০০ x ৬১২}{৮৫}$ = ৭২০ টাকা

আবার,

১০% লাডে ঘড়িটির বিক্রয়মূল্য = ১০০ + ১০ = ১১০ টাকা

ক্রয়মূল্য ১০০ টাকা হলে ঘড়িটির বিক্রয়মূল্য = ১১০ টাকা

ত্রয়মূল্য ৭২০ টাকা হলে ঘড়িটির বিক্রয়মূল্য =$\frac{১১০ x ৭২০}{১০০}$= ৭৯২ টাকা

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