three bells toll at interval of 9,12,15 minutes .if they start tolling together after what time will they next toll together?
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Hi,
This problem based on the concept
of LCM.
Here we have to find LCM of intervals
9 , 12 , 15 minutes which indicates
after how long they all again toll
together.
Write 9 , 12 and 15 product of prime
factors,
9 = 3 × 3
12 = 2 × 2 × 3
15 = 3 × 5
LCM( 9 , 12 , 15 ) = 3 × 3 × 2 × 2 × 5
= 180
Three bell toll together after 180
minutes .
I hope this will useful to you
This problem based on the concept
of LCM.
Here we have to find LCM of intervals
9 , 12 , 15 minutes which indicates
after how long they all again toll
together.
Write 9 , 12 and 15 product of prime
factors,
9 = 3 × 3
12 = 2 × 2 × 3
15 = 3 × 5
LCM( 9 , 12 , 15 ) = 3 × 3 × 2 × 2 × 5
= 180
Three bell toll together after 180
minutes .
I hope this will useful to you
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