In a fruit punch drink, the 3 ingredients are apple juice, orange juice and cranberry juice. If 3/4 of the drink is apple juice and 1/10 is orange juice then write the ratio of cranberry juice to apple juice to orange juice in its simplest form.
First find out how much is cranberry
1 - 3/4 - 1/10 = 1 - 15/20 - 2/10 = 3/20 is cranberry
then the ratio of c:a:o is 3/20 : 3/4 : 1/10 coverting to lowest common denominator
3/20 15/20 2/20 then elimnating the denominator
3 :15: 2