Question

what should be percentage gain on the product when it is sold for rupees 125 with a gain of 25 rupees​

Answer 1

$given \: selling \: price(sp) = 125 \\ \\ profit = 25 \\ \\ = > sp \: - cp = 25 \\ \\ = > cp = 100 \\ \\ profit \: percentage = \frac{profit \times 100}{cp } \\ \\ = \frac{25 \times 100}{100 } = 25 \: percentage$