Question

find the gain percent given that the cost price is rupees 2525 and the selling price is Rs 3408.75

Answer 1

let the gain be r percent
$\frac{sp}{cp} = \frac{100 + r}{100} \\ \frac{3408.75}{2525} = \frac{100 + r}{100} \\ 340875 = 252500 + 2525r \\ 88375 = 2525r \\ r = 35$
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Answer 2

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