Question 1054243
{{{L=B+23}}}
The area of the plot is,
{{{A=L*B=(B+23)B}}}
So then when the change is made to length and breadth,
{{{A[new]=(L-15)(B+7)=A-360}}}
Substituting,
{{{(B+23-15)(B+7)=(B+23)B-360}}}
{{{(B+8)(B+7)=B^2+23B-360}}}
{{{B^2+15B+56=B^2+23B-360}}}
{{{-8B=-416}}}
{{{B=52}}}{{{m}}}
Then,
{{{L=52+23}}}
{{{L=75}}}{{{m}}}