My job has 2 pay scales. One is Conductor
& the other is Brakeman.
I need a formula with a table that will do
the following example:

If my pay scale is c and we handle 1 to 80 cars,
my basic pay would be $75.00. If we handle
81 to 105 cars, my basic pay would be $85.00.

Now, if my pay scale is b and we handle 1 to 80 cars,
my basic pay scale would be $65.00. If we handle
81 to 100 cars, my basic pay scale would be $75.00.

This would get me started. BUT, I need the formula
using a table.
Thank you in advance