Question

Four bells toll after an interval of 8, 9, 12 and
15 seconds respectively. When will they toll
again?
​

Answer 1

Step-by-step explanation:

we have to find at which time all will ring together so we have to find L.C.M. of all 4 numbers

8=2×2×2

9=3×3

12=3×2×2

15=3×5

so L.C.M.=2×2×2×3×3×5=360

so after 360 seconds they all toll.

Answer 2

Answer:

Step-by-step explanation:

we have to find at which time all will ring together so we have to find L.C.M. of all 4 numbers

8=2×2×2

9=3×3

12=3×2×2

15=3×5

so L.C.M.=2×2×2×3×3×5=360

so after 360 seconds they all toll.

Mark my answer as brainly.