Question

three bells ring at intervals of15s, 21sand16s, respectively. all bells ring simultaneously at 12:00noon.they will again ring simultaneously at​

Answer 1

Answer:

12:28 pm

Step-by-step explanation:

For this question, we need to find the LCM of the time intervals given. This will give us the time after which all the bells ring simultaneously.

LCM of 15, 21 and 16 = 1680                    ....(Calculate yourself)

1680s  = 1680/60 min = 28min

Therefore, three bells will simultaneously ring at 12:28 pm.

Answer 2

Answer:

4 p.m.

Step-by-step explanation:

Both ring at 4pm the next day.

• Solution is LCM.
• LCM (Minutes)=1680 minutes=28 hours.
• 12:00 pm+28:00 hrs=40(-24) hrs the next day.
• 16hrs= 4p.m.
• therefore,Both ring at 4pm the next day.