Lesson: Applied Arithmetic - 06

Ratios

[Page 6 of 36]
We use ratios to make comparisons between two things. When we express ratios in words, we use the word "to" -- we say "the ratio of something to something else". Ratios can be written in several different ways.

Video Lesson - What is Ration

Ratios, like fractions, are another way of expressing Part/Whole relationships, although ratios often refer to Part/Part relationships as well. In either case, the setup remains the same:

Classic Ratio Setup: What is the ratio

For example:

A class has 12 male students and 21 female students.
The ratio of male students to female students =
The ratio of male students to all the students in the class

Ratios can be expressed in several different ways:

  • There are 4 male students for every 7 female students.
  • The ratio of male students to female students is 4 : 7.
  • The ratio of male students to female students is

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