Question

Four bells toll after an interval of5,7,3,and 12seconds
,respectively.these bells begin to toll together at 3.p.m. at what time will they next toll together

Answer 1

Answer:

toll of 1st bell = 5 seconds

toll of second Bell= 7 seconds

toll of third Bell= 3 seconds

toll of fourth Bell= 12 seconds

therefore time they will toll together is their L.C.M

therefore they will toll after 420 seconds that is 7 minutes

therefore they will toll at 3:07 together