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3 years ago

9

Traffic lights at three different junctions show green light at intervals of 10 seconds, 12 seconds and 15 seconds. They all sho

w green at 1:00 p.m. At what time will they show again green together?

1 answer:

Flauer [41]3 years ago

6 0

Answer:

it will show afain at 19 seconds

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