Question

Four bell ring at 24 ,36,45,54 sec respectivey.If they meet at 9 am ,when they will rang together

Answer 1

Hope it may help you...

Answer 2

Answer: 9.18 am (18 mins past 9)

Step-by-step explanation:

Find the LCM of 24,36,45,54

24 = 2*2*2*3 = 2³ * 3

36 = 4*9        = 2² * 3²

45 = 5*9       = 5 * 3²

54 = 2*27     = 2 * 3³

LCM = 2³ * 3³ * 5 = 1080

Hence after 1080 seconds, that is, after 18 mins at 9.18 am they will ring together