Answer:
4:1
Explanation:
basically you'd need to divide 60 by 15 since 15 is their common multiple.
"60/15= 4"
and you cant forget to divide 15 by the same number.
"15/15=1"
whichever comes first in the problem comes first in the ratio.
"Michael mixes 60 ounces of red paint" 60 simplified is 4 so we put 4 first.
"15 ounces of blue paint" 15 simplified is 1. so we put 1 last.
in the end we get the ratio '4:1'