100 - 10% = 90, but 90 + 10% = 99. How is this possible?
Md Ariful Islam
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এমবিএ(মার্কেটিং)
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Dr. Md Rushad Rahman
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If you take 90 and divide by 10, you get 9. Therefore, ten percent of 90 plus 90 is equal to 90 + 9, which equals 99.
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