Book:Anonymous/Chiu Chang Suann Jing

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Anonymous: Chiu Chang Suann Jing

Published $\text{c. $100$}$.
In English:

Nine Chapters of Arithmetic

The oldest surviving Chinese text on mathematics.



Example 1

Two and a half piculs of rice are bought for $\dfrac 3 7$ of a tael of silver.

How many piculs of rice can be bought for $9$ taels?