Answer:
5/3 or 3/5
Step-by-step explanation:
If there were 5 brown desk, it will be:
4,12,36,108,304
If there were 6 white desk, it will be:
5,10,15,20,25,30
Putting them it fraction: brown/white:
5/3
If putting them in this fraction: white/brown:
3/5