Question

solve question number 9 kindly

Answer 1

Hi! Here is your answer.  The LCM of 16, 24 and 40 seconds is 240. 60 seconds= 1 minute 240 seconds= 4 minutes Hence, The answer is at 2:04pm.  I hope this helps you. Mark my answer as brainliest if it helps you.

Answer 2

Given that the light flashes every 16 seconds, 24 seconds, and 40 seconds.

We need to calculate the LCM of 16,24 and 40.

Prime factorization of 16 = 2 * 2 * 2 * 2

Prime factorization of 24 = 2 * 2 * 2 * 3

Prime factorization of 40 = 2 * 2 * 2 * 5.

LCM(16,24,40) = 2 * 2 * 2 * 2 * 3 * 5

= > 240.

Given that they flash together at 2 pm.

So, the time when they next flash together = 240 seconds = 4 minutes = 2.04pm.

Hope this helps!