Question 147091
assume length = X
assume width  =Y
because length is 5ft longer than twice width so X=2Y-5
now 2(X+Y)=320
   =>X+Y=160
   =>X+(X+5)/2=160(PUTTING VALUE OF X FROM EQUATION X=2Y+5)
   =>3X=315
   =>X=105
 NOW PUT THIS VALUE OF X IN EQUATION X=2Y-5
                                   =>Y=(X+5)/2
                                   =>Y=55
ANSWER==   LENGTH=105 AND WIDTH=55