Six bells commence tolling together and roll at intervals of 2,4,6,8,10 and 12 seconds respectively.In 30 minutes how many times do they toll together.
sanjays2402:
Hi Krishna!
do you want the explanation or not
Answers
Answered by
3
30 minutes = 1800= 180= 90= 30= 15= 15
LCM of the numbers= 120 = 12= 6= 2 = 1=
Answer is= 15
LCM of the numbers= 120 = 12= 6= 2 = 1=
Answer is= 15
Its confusing!
And also ur answer is wrong the answer is 16times!
Answered by
3
first take lcm of 2,4,6,8,10,12=120
therfore toll altogether at same time is 120sec
how many tolls in 30 minutes=1800sec=?
solution=1800*1/120=15 times
but in the question
six bells commence tolling together(first toll) and tolls at intervals of 2,4,6,8,10,12,
beginning itself tolling from.so we should consider that toll also
therfore 15 times+1 time=16 times
therfore toll altogether at same time is 120sec
how many tolls in 30 minutes=1800sec=?
solution=1800*1/120=15 times
but in the question
six bells commence tolling together(first toll) and tolls at intervals of 2,4,6,8,10,12,
beginning itself tolling from.so we should consider that toll also
therfore 15 times+1 time=16 times
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