Plz solve all these questions for me! It's urgent as tomorrow is my test

Plz solve all these questions for me! It's urgent as tomorrow is my test the rollowi..g questions: An programme Was to be broadcast from Mumbai at 7•.30 p.m. This was heard by Nonie Indian sailors near Ivory Coast in West Africa At 20"W longitude. What was the local time 2, What in the longitude of place where the local time is 1:15 p.m.. when it is 4 a.m. at Chicag» Calculate the time at Durban (longitude 3CVE) when the time is 7:00 a.m. at New York (7S•W). 4. Calculate the longitude of a place where the local time is 6:00 a.m., when the time is 9:00 p.rn. New lh•lhi on longttude 77 •E. Calculate the local time at Singaix»re ( 104%) when it is 6:00 p.m. at Greenwich. 6. Calculate the location of a place where the local time is when it is 7:30 p.m. at 7, What is time and day at Mumbai (73•E) when it is Sunday 10:30 p.m. at Shillong (920B)?


​​​​​​Dear student,
(3.) When time is 7 A.M in new york, we can calculate the time at GMT which will be 11 A.M. Because for every longitude degree we add 4 minutes. 75 degrees west will be 5 hours ahead the time in GMT. 
Durban is at 30 degrees east of GMT  then using 4 minutes for each degree we get 120 minutes that is 2 hour so it will be 1 P.M in Durban. 

(5) When time is 6 P.M in Greenwich, time in Singapore will be 1 A.M  as it is 105 degrees east of GMT 4 minutes * 105 gives 7 hours ahead of GMT. 

Hope this information clears your doubts.
Regards

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