On an article,discount was given 3 times. Firstly 10% , then 10% again and finally 20% more. The price of an article drops to ₹ 6480. Find the Marked Price(MP).
₹ 10000
Let the MP be ₹ x
After first discount of 10% we get : x−10x100 = 90x100
After second discount of 10% we get : 90x100 −(10100×90x100) = 81x100
After third discount of 20% we get : 81x100 −(20100×81x100) = 64.8x100
As per problem,
64.8x100 = ₹ 6480
⇒x = ₹ 10000