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The price of sugar is reduced by 20%. Now a person can buy 500g more sugar for Rs. 36. The original price of the sugar per kilogram was?1). Rs. 14.402). Rs. 183). Rs. 15.604). Rs. 16.50 |
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Answer» LET the original price of the sugar for 1KG be ‘x’. Number of kgs = 36/x. After 20% decrease in price of sugar he can buy 500G more sugar for Rs. 36. $(\Rightarrow \left( {\frac{{36}}{x} + \frac{1}{2}\;} \RIGHT) \times \left( {x - \frac{{20}}{{100}}x} \right) = 36)$ ⇒ 36(0.8) + 0.5(0.8x) = 36 ⇒ 0.5(0.8x) = 36 – 36(0.8) = 7.2 ⇒ 0.4x = 7.2 ⇒ x = 18 ∴ The original price of sugar per kg = Rs. 18 |
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