If you were to write 3:9 (or 3 to 9), what type of ratio would this be? a
A part compared to a another part
b
A part compared to a whole
c
A whole compared to a part
d
None of the above

aloha~! my name is zalgo and i am here to you out on this amazing day. to answer your question, yes, nonzero numbers can have a greatest common factor and that would be 1. still don't get it? let me considering every number is divisible by 1 and hence every number has 1 as a factor of theirs. so, if 2 nonzero numbers didn't share any gcf (greatest common factor), they would still have a factor in common and that would be 1.

i hope that this ! : p

"stay and stay proud! " - zalgo

(by the way, do you mind marking me as brainliest? i'd greatly appreciate it! mahalo! x3)

60: 45 =12: 9 =4: 3 so the answer is 4: 3