Here, there are 2 percentage systems used here. 60% referencing to the rod and 24% referencing to the rope.
I have chosen to convert one of the 1st percentage system to fraction. This hopefully helps to make clear that they are separate systems.
For the 2nd percentage system, I still make use of the "%" symbol. And I use the model to clarify the question even further.
60% = 3/5
. _________?____________
. / \
Rod |----|----|----|----|----|
Rope |--------------|-------------------------|
. \_____ ____/
. 24%
. \________________ __________________/
. 100%
1unit --> 24% / 3 = 8%
Rod (5units) --> 5 x 8% = 40%
Rod:Rope = 40% : 100% = 2:5