six bells commence tolling together and toll at intervals of 2,4,6,8,10, and 12 seconds respectively. in 30 minits how many times do they toll together?
Answers
Answered by
3
Lcm(2,4,6,8,12)=120
That means after every 2 hours(120/2)they will toil together.
Therefore required no of times in 30h =30/2=15 times
As the first time is not counted then,(30/2)+1=16
16 times
Hope it helps...
That means after every 2 hours(120/2)they will toil together.
Therefore required no of times in 30h =30/2=15 times
As the first time is not counted then,(30/2)+1=16
16 times
Hope it helps...
Answered by
3
LCM of 2, 4, 6, 8 10 and 12 is 120.
So, after each 120 seconds, they would toll together.
Hence, in 30 minutes, they would toll 30*60 seconds / 120 seconds = 15 times
But then the question says they commence tolling together. So, they basically also toll at the "beginning" ("0" second).
So, total tolls together = 15+1 = 16
Similar questions