If the bearing of town A from town B is 215 , what is the bearing of town B from town A

Answer 1

ever hear of "doing a 180"?
just subtract 180° to face in the opposite direction
(or add 180 -- you want your answer to be between 0 and 360)

Answer 2

If the bearing of A from B is 215 .find the bearing of B from A

Answer 3

If the number attached to the degrees ( example: 215 degrees) is greater than 180 degrees, you subtract it and if it’s a smaller number like 50 degrees, you add 180 degrees to it
Note: this applies for back bearing