1) The length of a blackboard is 8 cm more than its breadth. If the length is increased by 7 cm and breadth is decreased by 4 cm, the area remains the same. The length and breadth of the blackboard (in cm) will be : A) 28, 20 B) 34, 26 C) 40, 32 D) 56, 48 Answer: Option AExplanation: