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Four bells first begin to toll together and then at intervals of 6, 7, 8 and 9 seconds respectively. Find how many times the bells toll together in two hours and at what intervals they toll together?
 one year ago
 one year ago
Four bells first begin to toll together and then at intervals of 6, 7, 8 and 9 seconds respectively. Find how many times the bells toll together in two hours and at what intervals they toll together?
 one year ago
 one year ago

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sauravshakyaBest ResponseYou've already chosen the best response.1
First find L.C.M of 6,7,8 and9
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.1
ya... thats right
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.1
So, the four bells will ring afer 540 seconds all together
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.1
now, 2 hour =  seconds
 one year ago

pratu043Best ResponseYou've already chosen the best response.0
But it says they ring together at intervals of 6, 7, 8, 9 seconds.
 one year ago

pratu043Best ResponseYou've already chosen the best response.0
So what have these numbers got to do with 504?
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.1
Since the Four bells first begin to toll together and then at intervals of 6, 7, 8 and 9 seconds respectively
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.1
they will ring together after 540 seconds now
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.1
PLZ read the question carefully
 one year ago

pratu043Best ResponseYou've already chosen the best response.0
So after that nine seconds, they will ring together after 504 seconds?
 one year ago

pratu043Best ResponseYou've already chosen the best response.0
Lets say they ring together first at 6.00.00. Then at 6.00.06 6.00.07 6.00.08 6.00.09 right?
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.1
Let me first expalin the question
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.1
there are four bellsdw:1344785837617:dw
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.1
which ring together at first
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.1
then BELL A rings after 6 seconds, BELL B rings after 7 seconds , BELL C rings after 8 seconds and BELL D rings after 9 seconds
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.1
so what do u think 540seconds means
 one year ago

pratu043Best ResponseYou've already chosen the best response.0
2 hours = 2 * 60 * 60 seconds = 3600 * 2 = 7200 seconds
 one year ago

pratu043Best ResponseYou've already chosen the best response.0
The three bells will ring TOGETHER every 504 seconds right?
 one year ago

pratu043Best ResponseYou've already chosen the best response.0
OK, I know how to do it now. Thanks!!
 one year ago
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