Answer:
Step-by-step explanation:
Givens
To find the total number of cereal boxes needed to use the whole rack, we just need to use the rule of three: If 12 cereal boxes occupies 60 centimeters of shelving, 800 centimeters would require how many cereal boxes
[tex]n=800cm \times \frac{12 \ boxes}{60cm} =160 \ boxes[/tex]
Therefore, Austing needs 160 boxes to complete the rack.