If 12 cattle eat up 3 1/3 acres of meadow in 4 weeks and 21 cattle eat up 10 acres of exactly similar meadow in 9 weeks, how many cattle shall eat up 36 acres in 18 weeks? (Hint: The grass continues to grow.)

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

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

In a certain lake, swarming with red geese, the tip of a lotus bud was seen to extend a span [9 inches] above the surface of the water.

If a ball 6 inches in diameter weighs 32 lbs, what will be the weight of a ball 3 inches in diameter?

Find the two numbers such that multiplying one by the other makes 8 and the sum of their squares is 27

Determine by using algebra the number of degrees in the angle A where: cos A = tan A

On an expedition to seize his enemy's elephants, a king marched 2 yojanas the first day.

How high above the earth must a person be raised that he [or she] may see 1/3 of its surface?

Two men start walking at the same time and travel a distance. One is walking faster and completes the journey sooner. How fast did each man travel?

If two Post-boys, A and B at 59 miles distance from one another, set out in the morning in order to meet...