75) The selling price of an item is Rs. 2750. Cost price of the item was Rs. 2500. The profit or loss % is

76) Simplify 1-(2/3)

77) The value of x if 2x+3=5

78) The value of y given (y+2)(y-1)=(y+3)(y-3)+5 is

79) Area of a square shaped land is 324 square meter. To run around this land, how much distance to be covered?