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Problems from Another Time

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

A horse, halving its speed each day, travels 700 miles in 7 days. How far does it travel each day?
Discussion of 15th century French manuscript, with translation of its problems, including one with negative solutions
A gentleman has a garden of rectangular form and wants to construct a walk of equal width half way round to take up half the garden. What must be the width of this walk?
A rifle ball is fired through a three-inch plank, the resistance of which causes an unknown constant retardation of its velocity.
As for a square piece of land that amounts to 100 square cubits, if it is said to you, "Cause it to make a piece of land that amounts to 100 square cubits that is round," what is the required diameter?
Two cog-wheels, one having 26 cogs, and the other 20 cogs, run together. In how many revolutions of the larger wheel will the smaller gain in 12 revolutions?
A certain merchant increases the value of his estate by 1/3...
There is a regular pentagon. The length of its side is a. Find the area of the pentagon. Generalize your result for a nonagon.
IOU
I owe a man the following notes: one of $800 due May 16; one of $660 due on July 1; one of $940 due Sept. 29. He wishes to exchange them for two notes of $1200 each and wants one to fall due June 1. When should the other be due?
Determine the different values of x, when a certain function hits a minimum.

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