Sun Tzu Suan Ching/Examples/Example 3

Example of Problem from

 * 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:
 * $\map \lcm {4, 5, 3}$