Two ships sail between new york and london. one makes the round trip in 12 days. the other takes 16 days. they both leave london today. what is the soonest both ships will leave london together again?

In order to find the answer to this question, you would need to find the Greatest Common Factor of 16 and 12 which would be 4 because 4 is the greatest amount that you can divide both 12 and 16 by. So the soonest both ships will leave together again will be in 4 days.

The answer should be all of the above!