Question

13. 6 bells of a Church toll at diferent
intervals of 5 seconds, 8 seconds, 10 seconds,
6 seconds, 12 seconds and 15 seconds
respectively. If they toll together at 12 noon,
how many times will they toll together till 1
pm?
(a) 15 times
(b) 20 times
(C) 31 times
(d) None of these​

Answer 1

here your answer

option:c

Step-by-step explanation:

lcm of 5,6,8,10,12,15 is 120

120 seconds equal to 2 minutes

every 2 minutes Bell's together tolled

will they toll together till 1

pm is

12 PM to till 1 PM

31 times