Even after allowing a discount of 40% on the marked price, a shopkeeper earns 50 % profit. By what percentage has the marked price been marked up above the cost price?
Let Marked Price = Rs. 100 ∴ S.P. = Rs. 60 Profit % = 50 % ∴ C.P = 60`xx100/150` = Rs.40 ∴ Required % = `(100-40)/40xx` 100 = 150%