Two ants are 100 paces apart, crawling back and forth along the same path. The first goes 1/3 pace forward a day and returns 1/4 pace; the other goes forward 1/5 pace and returns 1/6 pace. How many days before the first ant overtakes the second?

Individual problems from throughout mathematics history, as well as articles that include problem sets for students.

Given the cats eye as shown. Let the radius of the eye be given by R. What is the area of the pupil?

Three hundred pigs are to be prepared for a feast.

Discussion of 15th century French manuscript, with translation of its problems, including one with negative solutions

Suppose a man had put out one cent at compound interest in 1620, what would have been the amount in 1824, allowing it to double once in 12 years?

A circle, a square and an equilateral triangle all have the same perimeter equal to 1 meter. Compare their areas.

The authors recount the 'great tale' of Napier's and Burgi's parallel development of logarithms and urge you to use it in class.

A fox, a raccoon, and a hound pass through customs and together pay 111 coins.

Gun metal of a certain grade is composed of 16% tin and 84% copper. How much tin must be added to 410 lbs. of this gun metal to make a composition of 18% tin?

Now there are six-headed four legged animals and four-headed two-legged birds. Find the total number of animals and birds.