What price should kiran mark on a sari, which costs rs 3000 so as to gain 20% after allowing a discount of 10% ?

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.