The length of a rectangular blackboard is 8 m more than its breadth. If its leng

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The length of a rectangular blackboard is 8 m more than its breadth. If its length is increased by 7 m and its breadth is decreased by 4 m, its area remains unchanged. The length and breadth of the rectangular blackboard is :

Options:

A . 24 m, 16 m

B . 20 m, 24 m

C . 28 m, 16 m

D . 28 m, 20 m

Answer: Option D

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