Answer :

The greatest common factor would have to be 30
60/30=2
90/30=3
luana
[tex]Greatest\ common\ factor\ is\ the\ highest\ number\ by\ witch\ 60\ and\ 90\\can\ be\ divided\\\\ 60:2\\ 30:2\\15:3\\5:5\\\\ 90:2\\ 45:3\\ 15:3\\5:5\\\\GCF=2*3*5=30\\\\Greatest\ common\ factor\ of\ 60\ and\ 90\ is\ equal\ to\ 30 [/tex]