Question

Three bells commence tolling simultaneously. If they ring at an interval of 40 sec, 48 sec and 50 sec respectively. If they rang together at 7:00 am, at what time will they ring together again?

Answer 1

To find the time at which they all will ring simultaneously, first if all we have to find their LCM & add it to the time at which they rang before .

LCM of 40, 48, 50 = 120

120 seconds ÷ 60 seconds = 2 hours

7 a.m + 2 hrs = 9 a.m

Solution : 9 a.m

Answer 2

Step-by-step explanation:

hey watch the above pic for ur answer .