Three alarm clocks ring at intervals of 4, 12 and 20 minutes respectively. If they
start ringing together, after how much time will they next ring together?
Answers
Answered by
3
Thus, we found the LCM of 4, 12 and 20 to be 2×2×3×5=60 . Hence, the three clocks will ring together after 60 minutes or 1 hour.
Answered by
2
Answer:
Clocks will ring together again at L.C.M of 4,12,20
⇒LCM=4×1×3×5=60
⇒ clocks ring together after 60 minutes.
Similar questions