A3. There are three traffic lights that turn red at regular interval

1.	A3. There are three traffic lights that turn red at regular intervals of 36 seconds, 45 seconds and60 seconds. If all the three traffic lights turnred at 9 a.m., at what time will all of themsimultaneously turn red next?
Answer» LCM of 36,45 and 60 is 180 so the time when they change again is 180 seconds but we need to KNOW the time after 9 am so have to convert seconds into minutes time =180/60 = 3 minutes required time = 9am + 3 minutes =9:03 am this is the RIGHT answer please mark me as brainliest and PLEASE FOLLOW me

A3. There are three traffic lights that turn red at regular intervals of 36 seconds, 45 seconds and60 seconds. If all the three traffic lights turnred at 9 a.m., at what time will all of themsimultaneously turn red next?

Answer»

LCM of 36,45 and 60 is 180

so the time when they change again is 180 seconds

but we need to KNOW the time after 9 am so have to convert seconds into minutes

time =180/60 = 3 minutes

required time = 9am + 3 minutes

=9:03 am

this is the RIGHT answer

please mark me as brainliest and PLEASE FOLLOW me

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A3. There are three traffic lights that turn red at regular intervals of 36 seconds, 45 seconds and60 seconds. If all the three traffic lights turnred at 9 a.m., at what time will all of themsimultaneously turn red next?​

LCM of 36,45 and 60 is 180

so the time when they change again is 180 seconds

but we need to KNOW the time after 9 am so have to convert seconds into minutes

time =180/60 = 3 minutes

required time = 9am + 3 minutes

=9:03 am

this is the RIGHT answer

please mark me as brainliest and PLEASE FOLLOW me

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A3. There are three traffic lights that turn red at regular intervals of 36 seconds, 45 seconds and60 seconds. If all the three traffic lights turnred at 9 a.m., at what time will all of themsimultaneously turn red next?