When the time is 2am at GMT, it is already 5am at place X. calculate the longitude of place X.​

45°E

Explanation:

The lines of longitude can be used to determine the time of an area.

Every 15° line of longitude away from the Prime Meridian is an extra hour away from the time at the Prime Meridian.

The Prime Meridian is GMT and is the 0° longitude.

Areas that are ahead of GMT are to the east of the Prime Meridian and those behind GMT are west.

If the time is 5am in place X and it is 2am in GMT, the time difference is:

= 5 - 2

= 3 hours

Place X is ahead of GMT so they are to the east of the Prime Meridian.

3 hours in degrees is:

= 3 * 15

= 45°

Place X is 45° east of the Prime Meridian so is labelled as 45°E.

a. i. only is correct.