Things to Learn

  • There is no physical way to divide two different quantities like (5 miles)/(2 hours).
  • Make use of the structure of division and ratios to model (5 miles)/(2 hours) as a quantity 2.5 mph.
  • Interpret a rate as a division of two quantities, or better yet a fraction
  • Use this interpretation of a rate in word problems when multiplying a rate by a quantity, as in (5gal/min)∙(10 min)=51 gal/min ∙10 min =50 gal.

Finding a Rate by Dividing Two Quantities

Finding a Rate by Dividing Two Quantities — Your Turn