Question

THE TIME AT 20 DEGREES EAST LONGITUDE IS 4:00 AM. FIND THE TIME AT 80 DEGREES EAST LONGITUDE

Answer 1

Answer:

00:00 (12 midnight)

Explanation:

Lets say the 20 degree east longitude is Place A and the 80 degree east longitude is Place B.

Total number of longitudes: (80-20)=60

Time difference between the longitudes=60*4=240

(We multiply it by 4 because the time difference between 2 longitudes is 4 minutes)

Convert it into hours=240/60=4 hrs

Since it is 4 am in place A, and the place B is to the left of the place A we will subtract time.

4am - 4 = 12 midnight (00:00).

Hope this helps

Answer 2

12.00 am

Explanation:

• Local time is the official time in a specific region/nation. That is Local time denotes the "specific time" of a certain place that is expressed in relation to the "longitudinal" line which passes via the place
• We know that local time of any place is determined by its "longitudinal location"
• The time at 80°E longitude can be ascertained with reference to "know the time" at any given "longitudinal location"
• The difference in the "longitudinal stretch" with "known reference" = 80°E - 20°E = 60° (since both east longitude)
• Time that is taken to "travel longitudinal degree" = 4 minutes. We "multiply" it by 4 since the time difference between "2 longitudes" is "4 minutes".
• Time taken for 60°= 60 * 4 = 240 minutes = 4 hours
• Therefore, if it is 2am at 60°W longitude, then time at 10°E longitude is 12.00 AM (4.am- 4 hrs)

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