Question 194501
Perimeter  =  2 * Length  +  2 * Width

But  L = 3w +2

300= 2L +2w = 2(3w+2)  + 2w= 6w +4 +2w = 8w +4
296  =  8 w
w=37,,,,,,,,ANSWER
l= 3w+2 = 3*37 +2 = 113,,,,,  ANSWER
,
checking
P=2l +2w = 2(113) + 2(37) = 300,,,,,ok