Common Core Math 6.rp.3b
Ratios And Proportional Relationships: Understand Ratio Concepts And Use Ratio Reasoning To Solve Problems.
Solve unit rate problems including those involving unit pricing and constant speed. For example, if it took 7 hours to mow 4 lawns, then at that rate, how many lawns could be mowed in 35 hours? At what rate were lawns being mowed?