The commentary of football match which started at 4p.m on Friday in Teheran (60oE) would be heard in Seoul (150oE)at
Answer Details
Since Tehran (60oE) is ahead of Seoul (150oE) by 90o of longitude, which represents 6 hours of time difference (360o/24 hours = 15o/hour, 90o/15o = 6 hours).
If the football match starts at 4p.m on Friday in Tehran, then the time difference between Tehran and Seoul means that it will be 6 hours later in Seoul.
Therefore, the commentary of the football match would be heard in Seoul at 10p.m on Friday.