Question

Three bells toll at intervals of 9. 12. 15 minutes respectively. If they start tolling togel
after what time will they next toll together​

Answer 1

Step-by-step explanation:

9,12,15minute which indicated

9,12,15 are products of prime number

this factor

9= 3×3

12=2×2×3

15=3×5

(9,12,15) lcm =3×3×2×2×5

=180

there bells to together a few 180 minute

Answer 2

the time after which they toll together is the lcm of 9,12 & 15.

And the lcm of 9,12 & 15 is 180.