11. a) When the length of a rectangular field is reduced by 5 m and breadth is increased

11. a) When the length of a rectangular field is reduced by 5 m and breadth is increased
by 3 m, its area gets reduced by 9 sq. m. If the length is increased by 3 m and breadth by 2 m the area increases by 67 sq. m. Find the length and breadth of the room. Class 9 Simultaneous equation exercise 12.2