Two Term Ratios
compares two quantities measured in the same units.
EXAMPLE: A:B. 7:13. 7 to 13.
Three Term Ratios
compares three quantities measured in the same units.
EXAMPLE:A:B:C, 7:13:5, 7 to 13 to 5
Compares two quantities measured in different units.
A rate in which the second term is one.
A unit rate used when shopping.
EXAMPLE: $5.99/100 gallons
A relationship that says two ratios or two rates are equal.
it can be written in fraction form.
EXAMPLE: use it to find cost of 15 donuts if 5 cost $0.10
5 / $0.10 = 15 / $x ; x= $0.30 ( multiply 5 by 3 and $0.10 by 3 )