Suppose a ladder 60 feet long is placed in a street so as to reach a window 37 feet above the ground on one side of the street...

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

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.

Twenty-three weary travelers entered a delightful forest. There they found 63 numerically equal piles of plantain fruit.

A certain bishop ordered that 12 loaves be divided among his clergy.

Seven men held equal shares in a grinding stone 5 feet in diameter. What part of the diameter should each grind away?

How a translation of Peano's counterexample to the 'theorem' that a zero Wronskian implies linear dependence can help your differential equations students

Given a pyramid 300 cubits high, with a square base 500 cubits to a side, determine the distance from the center of any side to the apex.

Now there are three sisters who leave home together.

Given the frustum of a circular cone with height h.