If news is broadcast from London at 10:30 AM, at what time it will be heard at Baghdad (45°E)?

Answer: Option C

Time at London (0° longitude) is 10:30 am. Baghdad is at 45°E.
Difference in longitudes = 45°
For every 1° longitude, there is a difference of 4 minutes
For 45° longitude there will be a difference of = (45*4)minutes
= 180 minutes or 3 hours
As Baghdad is towards the east of London, it'll be ahead of time at London
time at Baghdad = (10:30am + 3 hours)
= 1:30pm