Answer:
-25
Explanation:
Y=45 and X=40
K=-25.
The order is going in fives.
If you go backwards, it would be 45,40,35,30 .etc.
When you reach P, it becomes 0.
This means we are going to be going into negative numbers.
You can now count 'forward' but negative.
From P to K it is only 5 letters away.
Multiply 5 by 5 which is 25 and since it is after 0, it is negative.
-25.