1.

Shrenik switched on a bulb at 2 : 39 : 40 hours and switched it off on the same day at 12 : 30 : 34 hours. For how long was the bulb in switched-on mode?

A. 9 hours 9 minutes 6 sec
B. 12 hours 40 minutes 6 sec
C. 9 hours 50 minutes 54 sec
D. 10 hours 9 minutes 6 sec
Answer» D. 10 hours 9 minutes 6 sec


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