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Question
The C.P. of 5 identical articles is equal to S.P. of 4 articles. Calculate the profit percent or loss percent made if all the articles bought are sold.
Solution
C.P. of 5 articles = S.P. of 4 articles
Let C.P. of 5 articles = S.P. of 4 articles = Rs. 100
∴ C.P. of 1 articles = Rs. `100/5` = Rs. 20
and S.P. of 1 article = Rs. `100/4` = Rs. 25
∴ Profit = S.P. - C.P. = Rs. 25 - Rs.. 20 = Rs. 5
∴ Profit % = `("Profit" xx 100)/"C.P." = (5 xx 100)/20 = 25%`
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