Answer:
8 convertibles
Step-by-step explanation:
Well, first we are going to assume the ratio for the convertibles and non-convertibles are the same.
So the company rented 4 convertibles and 30 others.
This makes the ratio 4:30
30+4=34 68 is double of 34 so it is logical to double the ratio to get 8:60. So that means there should be 8 convertibles.
I hoped this helped.