2 thoughts on “Three traffic lights change after 36,42,72 seconds. At what time will they change simultaneously”
Answer:
the LCM of 36, 42, and 72 = 2^3 x3^2 x 7^1 = 504. Let’s now convert 504seconds into minutes and seconds. 504seconds = 504/60 minutes = 8 24/60 minutes = 8 minutes and 24 seconds.Since the lights started at 9 a.m., they will simultaneously change at 9:08:24.
Thus, the LCM of 36, 42, and 72 = 2^3 x 3^2 x 7^1 = 504. Let’s now convert 504 seconds into minutes and seconds. 504 seconds = 504/60 minutes = 8 24/60 minutes = 8 minutes and 24 seconds. Since the lights started at 9 a.m., they will simultaneously change at 9:08:24.
Answer:
the LCM of 36, 42, and 72 = 2^3 x3^2 x 7^1 = 504. Let’s now convert 504seconds into minutes and seconds. 504seconds = 504/60 minutes = 8 24/60 minutes = 8 minutes and 24 seconds.Since the lights started at 9 a.m., they will simultaneously change at 9:08:24.
Answer:
Thus, the LCM of 36, 42, and 72 = 2^3 x 3^2 x 7^1 = 504. Let’s now convert 504 seconds into minutes and seconds. 504 seconds = 504/60 minutes = 8 24/60 minutes = 8 minutes and 24 seconds. Since the lights started at 9 a.m., they will simultaneously change at 9:08:24.