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?
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3
Find its lcm and that's the answer
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2
Answer:
14
Step-by-step explanation:
lcm of 6,7,8,9 = 504
2 hours is 2*60 mins*60 seconds
(2*60*60)/504 =14.
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