*Today , Harbeck told us to tell us the definitions of the keywords , here they are :*two-term ratio- this means comparing two quantities measured in the same units.

three-term ratio- this means comparing three quantities measured in the same units .

part-to-part ratio- this means comparing different parts of a group together.

part-to-whole ratio- this means comparing one part of a group to the whole group

rate- the comparison of two quantities measured in different units.

unit rate- A rate in which the second term is 1

unit place- A unit rate that involves prices. Often shown per 100 g or 100 mL.

proportion- An equation that says that two ratios or two rates are equal. It can be written

infraction form as 1/4 = 25/100.

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