Question

The perimeter of a rectangular plot is 120m. The lenght of the plot is decreased by 5m and breadth is increased by 5m,then the area is increased by 75 sq.m .Find the dimensions of the plot.​

Answer 1

Answer:

Step-by-step explanation:

No Let the length be x and breadth be y

Perimeter =80m

2(x+y)=80m

x+y=80/2=40

x=40-y

Area=x*y

If length decreased by 2

Breadth decreased by 2

(40-y-2) (y+2)=(40-y)y+36

(38-y)(y+2)=40y-y*y+36

38y+76-y*y-2y=40y-y*y-2y+36

36y+y*y+76=40y-y*y+36

40y-36y=76-36

4y=40

Y=10

X=40-y

x=30

Length =30m

Breadth =10m

Thanks Mark as branliest plzz