Question

Calculate the longitude of a place where the local time is 6 a.m. when the time is 9:00 p.m. at New Delhi on longitude 77 degrees East

Answer 1

Answer:

119 west

Explanation:

77E - 9 pm

At Greenwich - 15:52 ( 9- 308/60= 5 hrs 8 min behind )

And at 6 am 15:52- 6 = 7 hrs 52 min behind GMT

7:52 in degree is 119 west of greeenwitch

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Answer 2

Answer:

148°W

Explanation:

THE DIFFERENCE BETWEEN 6AM AND 9PM=15h

1h MAKES THE DIFFERENCE OF 15°

SO,

15h will make the difference of 15×15=225

Now to find longitude we will subtract 77 from 225

i.e., 225-77=148

SO, LONGITUDE OF PLACE IS 148°W