Math, asked by Deletaccount, 7 hours ago

Traffic lights at three different crossings on a road change after every 10 minutes, 15 minutes and 20 minutes, respectively. If they change together at 9 a.m. first, when will they change together again?

Answers

Answered by raviv302

1

Answer:

10 am

Step-by-step explanation:

lcm is 60, so they will change together after 60 minutes

Answered by shivuu36

0

Answer:

10 am is correct

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