1) The ratio of height of a room to its semi-pcrimeter is 2 : 5. It costs Rs. 260 to paper the walls of the room with paper 50 cm wide at Rs. 2 per metre allowing an area of 15 sq. m for doors and windows. The height of the room is : A) 2.6 m B) 3.9 m C) 4 m D) 4.2 m Answer: Option CExplanation:
