If there are 67 bottles in the refrigerator. The number of bottles in a full box is: 12 bottles.
Equation:
9+ 3b + 2(b-1) = 67
Let b represent the number of bottles
Solving for b
9 + 3b + 2b - 2 = 67
Collect like terms
5b + 7 = 67
5b= 67 - 7
5b=60
Divide both side by 5b
b= 60/5
b= 12 bottles
Therefore If there are 67 bottles in the refrigerator. The number of bottles in a full box is: 12 bottles.
Learn more about equation here: https://brainly.com/question/10777438
#SPJ1