The time in the western time zone (WTZ) of a certain country is one hour earlier than the time in the country’s eastern time zone (ETZ). A lives in the ETZ, and he keeps his watch set 15 minutes later than the actual time. If b who lives in the WTZ calls A when it is 4:30 in the WTZ, what time does A’s watch read?
When it’s 4:30 in WTZ, it’s 5:30 in ETZ. A keeps his watch set 15 minutes later than the actual time, so his watch says 5:45.