73.--DONKEY RIDING.

From Amusements in Mathematics by Henry Ernest Dudeney.

The complete mile was run in nine minutes. From the facts stated we cannot determine the time taken over the first and second quarter-miles separately, but together they, of course, took four and a half minutes. The last two quarters were run in two and a quarter minutes each.

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73.--DONKEY RIDING.: Amusements in Mathematics by Henry Ernest Dudeney | amphi