Answer:
x+y=1+3
Step-by-step explanation:
I’m not positive about this but I believe 6
If each of them paid an extra of $4.
4 person paid $4 x 4 = $16 extra
The $16 is the share of the 5th person, which is also each person's share.
$16 x 5 = $80.
Answer: The total bill is $80.