Common Core Math 6.rp.1
Ratios And Proportional Relationships: Understand Ratio Concepts And Use Ratio Reasoning To Solve Problems.
Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities. For example, The ratio of wings to beaks in the bird house at the zoo was 2:1, because for every 2 wings there was 1 beak. For every vote candidate A received, candidate C received nearly three votes.