Six bells start ringing together. if they ring at the intervals of 2,4,6,8,10and 12 seconds respectively, how many times will they ring together in 30 mintus? please show briefly how it solved .
Answers
Answered by
2
Answer: 16 times
Step-by-step explanation:
Firstly, take the LCM of the 2, 4, 6, 8, 10 and 12 seconds
That makes 120 seconds.
Meaning at 2 minutes it rings.
In 30 minutes they will ring 15 times together.
Of course, through logical thinking, we can conclude they also ring together at 0 seconds.
Therefore it is 15 + 1 = 16 times.
Answered by
0
take lcm convert to minutes then divide 30 by that value and add 1
shwetaekka:
I can't understand that why we add 1
I explained it in my answer. They, logically thinking, also ring together at 0 seconds, when they start.
no logical thinking see question first line
what it said
started tolling together
started ringing
after that 2,4,6,8,10,12,14,16,18,30,21,22,24,26,28,30 minutes will be time
so 15 times plus one starting
Yes, through reading that and having the capability of understanding that line, which is called logical thinking, you can come to the conclusion it’s 15 + 1.
ohh
Similar questions