Calculate the time at A which is 75 degrees West when it is 14 hours at B 20 degrees East.
Time changes as four minutes for each degree,that means at 75 degrees it will be 300 minutes from 0 degrees .As you have mentioned time at 20 E is 14 hours,subtracting 3 hors 40 minutes because the longitude difference is 55 degrees between two places as for 1 degree there is increase or decrease of 4 minutes when we either go east or west so calculating .The 55 degrees equals to 3 hours 40 minutes and subtracting these hours from 14 hours equals to 10:60 am