A farm has 2 bells. One that rings every 3 minutes and another that rings every 3 and half minutes suppose the bells rings together at noon. what is the 1st time after 2 p.m. that they will ring together again?
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Answer:
At 1:15 PM they will ring together.
Step-by-step explanation:
we have been given that first bell rings
every 15 minutes and second bell rings at every 25 minutes.
In order to find when both will ring
together again we can find LCM of
these two numbers.
15 = 3 × 5
25 = 5 × 5
Therefore, LCM of these two numbers is
LCM = 5 × 5 × 3
LCM = 75
Hence, 75 minutes = 75/60 = 5/4 hours
Therefore, at 1:15 PM They will ring together.
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