A wholesale cloth merchant buys a export surplus lot of cloth.he sells 33.33% of it at 20% and 37.5% of the remaning at a loss of 20%.What sholud be the mark up on the remaining cloth so that after giving a discount of 20% while selling ,the merchant gets a profit of 10% on the overall transcation?
A.50%
B.40%
C.25%
D.20%