Final answer:
After paying $6 on Monday, Joe had $44 left to pay, which he paid in equal amounts over the next 4 days. Therefore, Joe paid $11 to Paul on Tuesday.
Step-by-step explanation:
To determine how much Joe paid Paul on Tuesday, we must first calculate the remaining balance after the Monday payment.
Joe initially owed $50 and paid $6 on Monday, leaving a balance of $50 - $6 = $44.
Next, this remaining amount is to be paid equally over the next 4 days.
Therefore, we divide $44 by 4 to find the daily payment amount.
$44 \div 4 = $11
Thus, Joe paid Paul $11 on Tuesday.