Final answer:
To show that all the scenarios have similar ratio representations, we can use the concept of conversion factors. Each scenario can be expressed as a ratio that is numerically equal to 1.
Step-by-step explanation:
We can deal with these equivalences in the same way we deal with equalities in unit conversions: we can make conversion factors that essentially equal 1. For example, to determine how many eggs we need for 9 c of pancake mix, we construct the conversion factor: