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What is the correct answer?
4
The traffic lights at three different road crossings change after every 48 sec., 72 sec and 108 sec. respectively .If they all change simultaneously at 8:20:00 hours, then at what time they again change simultaneously .
A.
8:26:12 hrs
B.
8:27:12 hrs
C.
7:12:34 hrs
D.
9:12:30 hrs
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