Question

the length and breath of a rectangular park are in the ratio 5:2.a 2.5m wide path running all around the outside of the park has an area of 305m square. find the dimensions of the park.

Answer 1

$let \: first \: lenght = 5x \\ and \: breath = 2x \\ area \: of \: rectangular \: park \: = l \times b = 305$

Answer 2

(5x+5)(2x+5)-5x*2x= 10x sq+25x+10x+25-10x sq
=25+35x=305
=35x=305-25
=285/35=x
x=8
5x = 5*8 =40
2x = 2*8 = 16