Question

♦ Rate problems (Rate × Time = Distance)
♦ Value problems (Value × # of Items = Total Worth)
♦ Area problems (Length × Width = Area)
♦ Wage problems (Hourly Wage × Hours = Pay)
♦ Work problems (Work Rate × Time = Work Completed)
♦ Mixture problems (Percentage × Amount = Part)
♦ Simple Interest problems (Interest Rate × Amount Invested = Interest Earned)
♦ Etc.

What do all of these types of problems have in common? Why do you think that a chart helps in developing a plan for solving?