Simpkins and Green made arrangements to meet at the railroad station to catch the eight o'clock train to Philadelphia. Simpkins thinks that his watch is twenty five minutes fast although it is in fact ten minutes slow. Green thinks his watch is ten minutes slow, while it actually has gained five minutes.
What will happen if both men, relying upon their watches, try to arrive at the station five minutes before train time.
SOLUTION :
Simpkins thinks he will be in plenty of time when his watch shows 8:20, but it is already 8:30, much too late to catch the train. But Green will reach the station when his watch shows 7:45, and since his watch is five minutes fast, he will really be there at 7:40, twenty minutes ahead of train time. -QED-
