Question

three bell rings at the interval of 9 12 15 minutes respectively. if they start ringing together at a time after. what time will they next bring together

Answer 1

bells will ring after 3 hrs

Answer 2

Answer: 3 hours

Step-by-step explanation:tkake LCM of (9,12,15)

                                                     LCM = 180

          180 minutes = 3 hours

           .'. three bells ring together at 3 hours.