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Pat's watch gains an extra 10 seconds every 2 hours. Kim's watch loses 5 seconds every 3 hours. If both watches are set to correct time at 8 o'clock in the morning and run without interruption, after 72 hours, what will be the difference in time between Pat's watch and Kim's watch?
A. 4 min
B. 6 min
C. 6 min 40 sec
D. 7 min 30 sec
E. 8 min
The OA is E
Pat's watch gains an extra 10 seconds every 2 hours. Kim's watch loses 5 seconds every 3 hours. If both watches are set to correct time at 8 o'clock in the morning and run without interruption, after 72 hours, what will be the difference in time between Pat's watch and Kim's watch?
A. 4 min
B. 6 min
C. 6 min 40 sec
D. 7 min 30 sec
E. 8 min
The OA is E
