two Bells toll at intervals of 16 second and 28 seconds if they start tolling together after what least time will they told together again if they toll together at 8 a.m. when will they toll together again
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L.C.M. of 2, 4, 6, 8, 10, 12 is 120.
So, the bells will toll together after every 120 seconds(2 minutes).
In 30 minutes, they will toll together 30 + 1 = 16 times.
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