Question

four bells toll at intervals of 8 9 12 and 15 minutes respectively. if they toll together at 3p.m when will they all together next​

Answer 1

Answer: 9P.M.

Step-by-step explanation: we have four bells which toll at intervals of 8,9,12&15 min. respectively.

now, if they toll together at 3P.M. then first a fall we have to take the L.C.M. of the following intervals i.e. 8,9,12&15 = 3*3*2*2*2*5 = 360,

but this will come in minutes so the right answer = 360/60 Hr.

                                                                                      = 6Hr. ,

so, the four bells will all toll together next = (3+6)P.M.

                                                                         =9P.M.