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Question

By selling 100 mangoes, a fruit seller gains the S.P. of 20 mangoes. Find his gain%.


Solution

SP of 1 mango = x (let)
SP of 100 mangoes = 100 x
gain = SP of 20 mangoes = 20 x
CP of 100 mangoes = SP of 100 mangoes - gain
$$= 100x-20x$$
$$= 80x$$
gain percentage = $$\frac{gain}{CP}\times 100$$
$$= \frac{20x}{80x}\times 100$$
$$= 25\%$$

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Mathematics

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