Question

Three lights flicker at an interval of 8 18 and 24 minutes respectively. If the
flickered together at 1 pm, when will they again flicker at the same time?​

Answer 1

Answer:

Step-by-step explanation:

8, 18, 24

By taking LCM we get 144mins

By converting into hours - 144/60 we get 2 hr 22mins

Thus they flicker again at 3:22PM

Hope you understand

Answer 2

Answer:

At 12 minutes past 2PM, all the lights will flicker together.

Interval at which all shall flicker together can be found by calculating LCM of all the interval values (8, 18 and 24 minutes).

LCM of 8, 18 and 24 minutes is 72 minutes = 1 hour and 12 minutes. Hence after 1 pm, next they will flicker together at 1 PM + 1 hour 12 minutes, that is 2:12 PM.