The Baja Road Race

The Baja Road Race is 1,000 miles long. At the half-way point, Speedy Gonzales calculates that he has been driving at an average speed of 50 miles per hour. How fast should he drive the second half of the race if he wants to attain an overall average of 100 miles per hour?

Click here for the solution

Speedy will have to drive at an infinite speed in order to average 100 miles per hour for the course. He must drive the whole 1,000 miles in 10 hours to attain the required speed, but he has already used up his 10 hours to drive the first half of the course. He will have to finish the race in zero time!

more riddles

What are the people taking?

A steady stream of people enter Mike’s place of business and remove its treasured belongings. The people do not pay for what they take. Mike allows them to take as much as they can carry as long as they keep their mouths shut. What are the people taking and which type...

read more

How many kids?

Sometimes it helps to be bigger--especially when you're only four or five years old. The children were making candy apples for the Halloween party, eating as they worked. The bigger kids managed to gobble up seven apples apiece (and got stomachaches for their pains),...

read more

Will it bounce?

A mathematical billiard table is in the form of a rectangle with integral sides, and just four pockets, one in each corner. A ball shoots out of one pocket at angles of 45° to the sides. Will it bounce round the table for ever, or end up in one of the other...

read more

What was her solution?

This may be an old one, but many people seem not to have heard it. Samantha and Suzy were squabbling over a small cake. Their mother solved the question of which one should cut it, as well as the problem of how to make sure the pieces were even, in a very simple...

read more