Two bells chime at an interval of 10 minutes and 15 minutes respectively. At what time will they chime together
Answers
Answer:
time when 1st bell chime =10min
time when 2 nd bell chime = 15 min
time when they will chime together will be their L.C.M
that is 30min
therefore they will chime after 30minutes
They will chime together at at interval of 30 minutes.
Explanation:
Given : Two bells chime at an interval of 10 minutes and 15 minutes respectively.
The time they will chime together = lcm (10 , 15) minutes
[Note : lcm = Least common multiple of two number that is divisible by both of them]
Prime factorization of 10 and 15 :
10= 2 x 5
15 = 3 x 5
lcm (10 , 15) = 2 x 3 x 5 = 30
Therefore , they will chime together at at interval of 30 minutes.
# Learn more :
If 3 clocks chime at intervals of 15, 20,30 minutes respectively , they all chime together at 10a.m at what time will they chime together again?
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