Answer: the bearing of B from A is 420°.
Explanation:
To find the bearing of B from A, we need to add 180 degrees to the bearing of A from B.
Given that the bearing of A from B is 240°, we can calculate the bearing of B from A as follows:
240° + 180° = 420°.
Therefore, the bearing of B from A is 420°.
Note that bearings are typically measured in degrees clockwise from the north direction. So, the bearing of B from A is 420° clockwise from north.