Question

ex. 10
7 A function started at 10:15 p .m and ended at 2:30 a.m . find the duration of function
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Answer 1

(10 hrs 15 mins)-((12 hrs - 10 hrs 15 mins) + 2 hrs 30 mins)

=10 hrs 15 mins + (2 hrs 15 mins + 2 hrs 30 mins)

=10 hrs 15 mins + 4 hrs 45 mins

=14hrs 60 mins

=15hrs