Question 980432
 Each of five people have a car with a full 1 gallon gas tank.
 Each car goes 10 miles on a gallon.
 They all can carry at most 5 one-gallon cans of gasoline.
 They start together and wish to have one car go as far due west as possible and yet have all the cars return.
 Only unopened cans can be transferred to other cars.
 What is the most miles due west that one car can go?
:
How about all 5 cars go 10 miles.
Each of 4 of the cars pour 1 gal in their own cars and give the 5th car 4 one gallon cans of gas. for a total of 16 gallons
The fifth car has 5 gallons + 16 gallon given to him.  10 * 21 = 210 miles west while the others return home