Sun Tzu Suan Ching/Examples/Example 3
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Example of Problem from Sun Tzu Suan Ching
- There are $3$ sisters, of whom the eldest comes home once every $5$ days,
- the middle every $4$ days,
- and the youngest in every $3$ days.
- In how many days will all the $3$ meet together?
Solution
- $60$ days.
Proof
The answer is found by:
- $\map \lcm {4, 5, 3}$
$\blacksquare$
Sources
- c. 280 -- 473: Sun Tzu: Sun Tzu Suan Ching
- 1913: Yoshio Mikami: The Development of Mathematics in China and Japan
- 1992: David Wells: Curious and Interesting Puzzles ... (previous) ... (next): Sun Tsu Suan Ching: $71$