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2.1 - Ratios and Proportions
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Ratio
A comparison of two “things” (quantities/values), such as a:b, a to b, or a/b.
Proportion
A set of equal ratios (a/b = c/d) solved by cross multiplication.
Ratio Table
A table that compares quantities, where proportional values are listed across the rows.
Part-to-Part Ratio vs Part to Whole Ratio
Hens: 5, Roosters: 1
Part to Part => 5/1
Part to Whole => 5/6