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Two traffic lights both turn green at 1:20 pm. One light is on a 72-second 0cycle from green back to green while the other light is on a 1-minute cycle. After how many minutes will they again turn green
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Two traffic lights both turn green at 1:20 pm. One light is on a 72-second 0cycle from green back to green while the other light is on a 1-minute cycle. After how many minutes will they again turn green together?

User BRAHIM Kamel
by
7.2k points

2 Answers

3 votes

Answer:

32

Explanation:

User Raluca
by
6.8k points
6 votes

Answer:

6 minutes

Explanation:

1 minute = 60 seconds

LCM of 60 and 72 = 360

360 seconds = 6 minutes

User SDJSK
by
6.7k points
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