Purchase price = Rs. 3000
Let the price marked on the Sari be x
After 10% discount, Kiran still makes 20% gain.
After discount, the price of the Sari = (100-10)%*x = 90% of x = 0.9x
Then,
(0.9x - 3000)/3000 = 0.2
0.9x - 3000 = 3000*0.2 = 600
0.9x = 3000+600 = 3600
x = 3600/0.9 = 4000
Therefore, priced marked on Sari should be Rs. 4000.
