Anil sells a laptop for $R s . 2400$ he gains $15 % .$ What was the price at which he bought it .

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Solution

Selling price of $R s . = 2400$
gam % = 15
$\Rightarrow \frac{s e l l i n g p r i c e - c o s t p r i c e}{c o s t p r i c e} \times 100 = 15$
$\Rightarrow \frac{s e l l i n g p r i c e}{c o s t p r i c e} = - 1 = \frac{15}{100}$
$\Rightarrow \frac{s e l l i n g p r i c e}{c o s t p r i c e} = \frac{23}{20}$
$\Rightarrow c o s t p r i c e = s e l l i n g p r i c e \times \frac{20}{23} = 2400 \times \frac{20}{23}$
$c o s t p r i c e = 2086.9 ≃ 2087 r s .$
$∴$ Anil bought laptpo at Rs. 2087

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Anil sells a laptop for Rs.2400 he gains 15%. What was the price at which he bought it .

Selling price of Rs.=2400gam % = 15⇒sellingprice−costpricecostprice×100=15⇒sellingpricecostprice=−1=15100⇒sellingpricecostprice=2320⇒costprice=sellingprice×2023=2400×2023costprice=2086.9≃2087rs.∴ Anil bought laptpo at Rs. 2087

Anil sells a laptop for $R s . 2400$ he gains $15 % .$ What was the price at which he bought it .