A) cranberry : apple 3 : 5 6 : 10 12 : 20 30 : 50 33 : 55
b) These quantities are proportional because they are the same as 3/5 just doubled, tripled etc. For example, 3/5 is proportional to 6/10 because both the numbers were multiplied by the same number. In this case it's 2.