The correct option is
B 26.5 % loss
Let Initial price of goods
=x Rs
Discount = 15%
So, Selling price=Marked price−Discount
=x−15% of x=17x20
Given that this selling price will give profit of 20% on selling price.
So, Profit=20% of 17x20=17x100
Hence, Cost Price (CP) =Selling price−Profit=17x20−17x100=68x100
When Shopkeeper reduces price of goods by 50%
Then Selling price (SP) =x−50% of x=x2=50x100
Since Selling Price < Cost Price. So, there is a loss.
Hence, Loss=CP−SP=68x100−50x100=18x100
So, Loss percentage=Loss×100CP=18x100×10068x100=180068=26.47=26.5% (Approx)