Common Core Mathematics 68    Cluster  Understand ratio concepts and use ratio reasoning to solve
problems.    Topic  Ratios and Proportional Relationships 
    Grade 6     6.RP.1.  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.”    

