Q122
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 :
A.
24 m, 16 m
B.
20 m, 24 m
C.
28 m, 16 m
D.
28 m, 20 m
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Let the breadth = x cmThen, length = (x + 8) m
So, length = 28 m and breadth = 20 m