A shopkeeper bought 40 dozen eggs at Rs 1.40 each. 80 eggs were broken in transportation. He sold the remaining eggs at Rs 1.60 each. what is his profit or loss percent?
The angles of elevation of the top of a building from the top and bottom of a tree are x and y respectively. If the height of the tree is h meter then, in meter, the height of the building is:
Joseph bought two woollen jackets for Rs. 2,100 and Rs. 3,150, respectively. By selling the first at a gain of k% and the second at a loss of k%, he found that the selling price of both is the same. What is the value of k?