Lenght of a ractangular offices is three times of its width. It costs Tk. 1102.50 for putting carpet on the floor at Tk. 7.50 per square meter. What is the length of the office?

প্রশ্নঃ Lenght of a ractangular offices is three times of its width. It costs Tk. 1102.50 for putting carpet on the floor at Tk. 7.50 per square meter. What is the length of the office?