Question : If the ratio of the cost price to the selling price of an article is 4 : 5, the percentage of profit will be:
Option 1: 20
Option 2: 0.1
Option 3: 10
Option 4: 25
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Correct Answer: 25
Solution :
Given: The ratio of the cost price to the selling price is 4 : 5.
Let the cost price = $4x$ and selling price = $5x$
Profit from the article $=5x-4x=x$
So, the profit percentage $=\frac{x}{4x}×100=25$%
Hence, the correct answer is 25.
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