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Problems from Another Time

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

X, Y and Z hired a pasture for the season for $90.00. Each has a different number of mules and are on the pasture for a different number of days. How much is each to pay?
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 horse, halving its speed each day, travels 700 miles in 7 days. How far does it travel each day?
A certain merchant increases the value of his estate by 1/3...

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