Question

In a rectangle, if the length is increased by 3 metres and breadth is decreased by 4 metres, the area of the rectangle is reduced by 67 square metres. If length is reduced by 1 metre and breadth is increased by 4 metres, the area is increased by 89 sq. metres. Find the dimensions of the rectangle.

Answer 1

Step-by-step explanation:

area of a rectangle = length . breadth

length is increased by 3m....

l+3

breadth

b-4

so we need to product there

1. l+3 ×b-4
2. lb+3b-4l-12=lb-67
3. 4l-3b-55.........1 we get the answer

if length is

l-1

breadth is

b+4 we get product

4l-b+85...........2 by substitute

1. 4l-3b-55
2. 4l-b+85.=
3. we get
4. 2b= 140
5. b=70 meter

substitute bin eqn 1

Answer 2

Answer:

Refers to the attachment