C.P of the article?

Algebra Level pending

A dealer sells an article for Rs.75 and gains as much percent as the cost price of the article. Find the cost price of the article.

40 50 55 45

Shriniketan Ruppa by Shriniketan Ruppa , 15, India

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1 solution

Let the Cost price be x x .

SP = x ( 100 + x ) 100 =\dfrac{x(100+x)}{100}

⟹ 7500 = 100 x + x 2 \implies 7500 =100x+x^2

⟹ x 2 + 100 x = 7500 = 0 \implies x^2+100x=7500 =0

⟹ x = − 100 ± 200 2 = 50 \implies x =\dfrac{-100 \pm 200}{2} =\boxed{50} (Since price is positive).

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@Vinayak Srivastava If you are interested then check out my other problems. here

Shriniketan Ruppa - 11 months, 2 weeks ago

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I got it wrong :)

Vinayak Srivastava - 11 months, 2 weeks ago

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What did you get wrong?

Shriniketan Ruppa - 11 months, 2 weeks ago

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@Shriniketan Ruppa – The problem.

Vinayak Srivastava - 11 months, 2 weeks ago

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