Question 65956
Let "l" be the lenght of the field 


and


"b" be the breadth of the rectangular field. 


Given that the perimeter of the field is 230ft.


Also, given that the lenght of the field is 5ft less than twice its width. 


Therefore, 


l = 2b - 5   and b = b 


The perimeter is given by 2l + 2b



Hence, 2l + 2b = 230 


2(2b - 5) + 2b = 230 


4b - 10 + 2b = 230 


Adding like terms, we get: 


6b - 10 = 230 


6b = 230 + 10 


6b = 240 


b = {{{240/6}}} 


==> b = 40 


Now, substitute this value in the equation for l. We get: 


l = 2b - 5 


l = 2(40) - 5 


l = 80 - 5 


l = 75 


Hence, the solution.