the cost price of 20 articles is same as the selling price of 16 articles find the gain percent
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let cp of 20 articles = rs x.
then c.p of 1 article = x/20
similarly sp of 16 articles is also rs x as mentioned.
then sp of 1 article = x/16
then loss % = [(x/16-x/20)/(x/20)]* 100=25%
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gain%= (20-16) x 100/16
4x100/16 = loo/4=25%
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