If the list price of a toy is reduced by Rs. 2, a person can buy 2 toys more for Rs. 360. Find the original price of the toy.

Let the original price of the toy be ‘a’.


Given, when the list price of a toy is reduced by Rs. 2, a person can buy 2 toys more for Rs. 360.


The number of toys he can buy at the original price for Rs. 360 = 360/a


According to the question, 



⇒ 360a = (a – 2)(360 + 2a)


⇒ 360a = 360a + 2a2 – 720 – 4a


⇒ a2 – 2a – 360 = 0


⇒ a2 – 20a + 18a – 360 = 0


⇒ a(a – 20) + 18(a – 20) = 0


⇒ (a + 18)(a – 20) = 0


⇒ a = Rs. 20


 

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