Answer:
15 m and 24 m
Explanation:
Let x represent the length of the longer side. Then 5/8x is the shorter side and the difference is x -5/8x = 3/8x.
You say the difference is 9 m, so ...
... 3/8x = 9 m
... x = (8/3)(9 m) = 24 m . . . . longer side
and the shorter side is (5/8)(24 m) = 15 m. . . . . shorter side