♦ 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?

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?

anonymous · Answer

I have no input because it might be thought rude.

anonymous · Answer

A rate is a little bit of something per little bit of something else.  For speeds, it might be miles per hour (like 13 miles per 1 hours).  If you multiply by the bottom number you'll get the top, because the rate is simply a ratio.