If 3 planets complete a revolution around sun once every 200250 and 300 days respectively when do they all come together again?

To find when the three planets will align again, we need to determine the least common multiple (LCM) of their revolution periods: 200, 250, and 300 days. The LCM of these numbers is 3000 days. Therefore, all three planets will come together again after 3000 days.