Answer: $13.75
Explanation:
Let's take the given number first
four friends bought $15.00 passes for an amusement park
Now we need to multiply 15 by 3 to get that total
15x4=60
Now we need to take the total amount spent during the day and subtract it by 60
115-60=55
Now we need to divide 55 by 4 to get the total price of each shirt
55/4
$13.75