Question

only (d) and (i) sums

Answer 1

d) New York time = 8:30 pm, Friday, 31st Dec 2010

Long of New York = 74°W
Long of Kolkata = 88.5°E

Long difference = 74°+88.5°= 162.5° E

Earth rotates 360° in 24 hrs
for 1° difference, tine = 24/360 hrs
for 162.5° difference, time = (24/360)*162.5 hrs
= 10.833333 hrs = 10 hrs 50 mins

Since Kolkata is to the East of New York,
Kolkata Local Time = New York Local Time+ Time diff
Kol Local Time = 08:30 pm + 10 hrs 50 mins
= 07:20 am on Saturday 1st January 2011