A mile long train is moving at 60 miles per hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?
Riddle AnswerHard Riddles
Pressure Cooker for Profit
A friend of mine bought a used pressure cooker for $60. She somehow did not find it useful and so when a friend of hers offered her $70, she sold it to her. However, she felt bad after selling it and decided to buy it back from her friend by offering her $80. After having bought it once again, she felt that she did not really need the cooker. So she sold it at the auction for $90.
How much profit did she make? Did she at all make any profit?
Riddle AnswerCalendar Cubes
A man has two paper cubes on his desk. Every day he arranges both cubes so that the front faces show the current day of the month. What numbers are required on the faces of the cubes to allow this for all possible days in the calendar?
Riddle AnswerRight Foot Forward
A short man takes three steps to a tall man’s two steps. They both start out on the left foot. How many steps do they have to take before they are both stepping out on the right foot together?
Riddle AnswerWholesale Merchant
A wholesale merchant came to me one day and posed this problem. Every day in his business he has to weigh amounts from one pound to one hundred and twenty-one pounds, to the nearest pound. To do this, what is the minimum number of weights he needs and how heavy should each weight be?
Riddle Answer