There is a time difference of 1 hour in the 15 degrees.

Hence there is a difference of 70 degrees between 2 places.

After calculation, there will be a difference of 4 hours and 8 minutes.

75 degree east means ahead.

Therefore, add this time difference to get time at this place.

If the time at a place A (10°N, 05'E) is 10 a.m., what will be the time at place B (30°N, 75°E)? Show your calculations.

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Time at place A (10°N, 05'E)  = 10 a.m.

Time at place B (30°N, 75°E) = (75 x 4) minutes

         = 300 minutes

         = (300/60) hours

         = 5 hours

         = 5 p.m.

Hope it helps...