Answer :
The time at longitude 10 degrees west is 9:40 pm, the day at longitude 10degrees west is Sunday, and the date at longitude 10 degrees west is 10th April 2011.
This is based on the question, where the time at 100° East longitude is 5 am, Monday, 11th April 2011.
To reach 10° West longitude, there is a need to go 110° West from the current position.
This implies a need to reach 0° and then 10° to reach 10° west longitude.
Given that 1° = 4 minutes
Thus, 110° = 110 × 4 = 440 minutes
=> 440 ÷ 60 = 7 hours, 20 minutes
Given that, by moving from East to West, time goes backward.
Thus, we have to remove 7 hours, 20 minutes from 5 am, to get the correct time, day, and date at that place.
Hence, we have 5 am - 7 hour 20 minutes = 9:40 pm
Since the date will also go backward, we will be on Sunday, April 10th, 2011.
Hence, in this case, the time, day, and date will be 9 pm, Sunday, April 10th, 2011, at 10° West longitude if the time is 5 am at 100° East longitude.
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