4 bells toll together at 9am, they toll after 7,8,11,12 seconds respectively. how many times they toll together again in the next 3hours
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Answer:
5 times
Step-by-step explanation:
Take LCM of 7,8,11,12 which is 1848
Total time is 3 hr = 10800 sec
Ringing again =10800/1848 = 5.8
Thus 5 times
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