Three Titanics

Three steamers sailed from the same port on the same day. The first came back on the third, the fourth 4th day, and the third returned on the sixth. How many days after leaving, the steamers meet again in the harbor?

Correct answer:

n =  12

Step-by-step explanation:

3 ...  prime number 4=22 6=23 LCM(3,4,6)=223=12  n=LCM(3,4,6)=12

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