To find out when Jackson and Tyson will work together again, you need to determine the least common multiple (LCM) of their work cycles.
Jackson works every 3 days, and Tyson works every 5 days.
The multiples of 3 are: 3, 6, 9, 12, 15, 18, ...
The multiples of 5 are: 5, 10, 15, 20, ...
The smallest common multiple of 3 and 5 is 15.
Therefore, Jackson and Tyson will work together again in 15 days.