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An electronic device makes a beep after every 60 sec. Another device makes a beep after every 62 sec. They beeped together at 10 am. The next time, when they would beep together at the earliest is = ?

An electronic device makes a beep after every 60 sec. Another device makes a beep after every 62 sec. They beeped together at 10 am. The next time, when they would beep together at the earliest is = ? Correct Answer 10.31 am

Interval of change
= (LCM of 60 and 62) sec
= 1860 sec
= 31 min
So, the devices would beep together 31 min after 10 am
i,e; at 10.31 am

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