Question

Qu: Three temple bells rings at interval of 30 min, 1 hour and 45 min respectively. If they rang
together at 9.00 am at what time will they ring together?​

Answer 1

Answer:

1 hour = 60 min

So,

30=2×3×5

45=3×3×5=3²×5

60=2×2×3×5=2²×3×5

Therefore, LCM=2²×3²×5

=4×9×5

=180

Therefore, the bells will ring together after 180 minutes, that is, 3 hours

So, they will ring together at 12:00 pm