Question

By selling 20 articles a man gains the selling price of 4 articles.Find his gain percent.

Answer 1

Step-by-step explanation:

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Let cost price of article be C.P. Let S.P of 1 articles be SP by selling 5 articles at SP he makes a gain of cost price of one article.

Gain on 1 article = SP – CP;

⇒ Gain% = (SP−CP)/CP x 100

Gain on 2 articles = 2 x (SP – CP)

Gain on 5 articles = 5 x (SP – CP)

Given than gain on 5 articles is CP of 1 article

∴ 5(SP – CP) = CP

(SP−CP)/CP = 1/5

Gain percentage (SP−CP)/CP x 100

= 1/5 x 100 % = 20%