Here's why it's tricky:
* Different Roles: Sailors are part of the Navy, and soldiers are part of the Army.
* No Direct Conversion: You can't simply convert sailors into soldiers.
To answer the question correctly, we need to assume the question is asking about a separate group of soldiers:
* Four fifths of what? We need to know what the "four fifths" refers to. It's likely it's referring to a larger group of soldiers.
* We need more information: To find out how many soldiers there are, we need to know what the total number of soldiers is that we're taking four-fifths from.
Let me know if you want to try a different question!