Favorite math problems
The Horse Problem
One of my favorite math problems comes from one of my Mathematics for the Elementary School Teachers course. This problem is a common problem seen in elementary text books that tends to give children some trouble.
A man buys a horse for $60. He realizes he can't keep it anymore and sells it for $70. After a while we realizes he needs a horse and buys it back for $80. He finally decides to sell the horse for $90. Did he make a profit or lose money? Click here for the solution |