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Convergence articles

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A boy gives 11 coins of equal denomination to a man, and the man finds that their total value in yen is 4 less than his age.
Two bicyclists travel in opposite directions around a quarter-mile track and meet every 22 seconds. When they travel in the same direction on this track, the faster passes the slower once every 3 minutes and 40 seconds. Find the rate of each rider
Now there is a wall 5 feet thick and two rats tunnel from opposite sides.
Images from a 16th century text about the astrolabe and its uses
Two men have a certain amount of money. The first says to the second, "If you give me 5 denari, I will have 7 times what you have left."
A set of four posters dealing with the Pythagorean Theorem, infinity, prime numbers, and the history of pi.
A new sourcebook containing the works in their original form along with a translation and a brief commentary.
What proportions of sugar at 8 cents, 10 cents and 14 cents per pound, will compose a mixture worth 12 cents per pound?
A reprint of the 32nd yearbook of the NCTM, dealing with developments in mathematics education in the U.S. and Canada. In particular, it gives a history of the various reform movements up to the publication date of 1980.
There are two numbers whose sum equals the difference of their squares.