Question

Four bells ring at interval 6, 12, 18, 24 seconds. They starts ringing simultaneously at 8 o’ clock. When will they ring again together:

• A. 1 minutes 12 seconds past 8
• B. 2 minutes 24 seconds past 8
• C. 5 minutes 17 seconds past 8
• D. 2 minutes 27 seconds past 8

Answer 1

The correct option is A

1 minutes 12 seconds past 8

They will ring together again after L.C.M of (6, 12, 18, 24) seconds that means after 72 seconds (or) one minute 12 seconds.