The perimeter of a rectangle is 136 ft. the ratio of its length and width is 9: 8. what are the dimensions of the rectangle ? can someone me? ?

The dimensions would be: Length=36 and Width=32. I solved this by just using multiples of the numbers in the ratio. 9x4=36 and 8x4=32, so the ratio can still simplified to 9:8. P=2xL+2xW, so (2x36)+(2x32)=136.
L=36ft. and W=32ft.

Ithink it's the first one ( let me know if it right)