Question

four bells toll at an interval of 8,12,15,18 seconds respectively .all the four begin to toll together ,how many times wil they tol together in one hour excluding the one at the start?

Answer 1

i think it is your answer

Answer 2

Answer:

Step-by-step explanation:

This is the same as asking for the highest common multiple

8= 4x2

12 = 4x3

15 = 3x5

18 = 3x3x2

so we need: 2x2x2x3x3x5 = 360

they will toll together every 360 seconds

in 1 hour there are 3600 seconds

so they will toll at

360 s, at 720 s, ... at 3600 s

that would be 10  

(we are supposed to exclude the toll right now)