Question 40712
LENGTH IS =2W-5 WIDTH IS =W THE THE PERIMETER IS 2(2W-5)+2W=230 THUS 
4W-10+2W=230 6W=240 OE W=240/6 OR W=40 THEN THE LENGTH IS 2*40-5 OR 80-5 OR 75

PROOF 2*75+2*40=150+80=230