Question

By selling an article for Rs.21, a trader loses as much percent as the cost price of the article. Find the cost price.

Answer 1

Hello here is your answer by Sujeet yaduvanshi ☝☝☝☝☝☝☝☝☝☝☝☝☝



GIVEN That:-)


Selling of articles=21


Loss%=x%

then

{x-21)x*100


100x²-2100x

100(x-21)=0
x-21=0/100

x-21=0

x=21

Answer 2

Step-by-step explanation:

★ Question :-

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⟶ By selling an article for ₹ 21 , A trader loses as much percent as the cost price of the article. Find the cost price.

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★ Answer :-

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⠀⠀⠀$\maltese \: \bold \red{Let \: C.P \: of \: the \: article \: be \: ₹ \: x} \\ \\ \\ ∴ \bold{Loss = x \: \% \: of \: C.P} \\ \\ \bold{ = \frac{x}{100} \times₹ \: x } \\ \\ \bold{ = ₹ \: \frac{ {x}^{2} }{100} } \\ \\ \\ \\\bold \pink{ ∴ \: {x}^{2} - \frac{ {x}^{2} }{100} = 21} \\ \\ \mapsto \bold{ x - 100x + 2100 = 0 } \\ \\ \longrightarrow \bold{ x = \cancel{ \frac{2100}{100 }} = 0 } \\ \\ \boxed {\bold \red{ \mapsto \: x = 21}}$

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★ Hence,

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• The C.P of the article = $\bold\red{₹ \: 21}$

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$\large\colorbox{pink}{Hope lt'z Help You ❥ }$