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mr Goodwill [35]
3 years ago
13

Red lights flash every 6 seconds. Blue lights flash every 8 seconds. The store owner turns on the lights. After how many seconds

will the lights flash at the same time for the first time
Mathematics
1 answer:
Morgarella [4.7K]3 years ago
8 0
In 24 seconds they will flash at the same time for the first time
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2 minutes

Step-by-step explanation:

The front of the train enters the tunnel and travels 1 km before the rear of the train enters the tunnel.  Thus, the total distance traveled by the front of the train is 2 km, and this is covered in a certain number of hours:

Since distance = rate times time, time = distance / rate.  In this particular case we have:

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time = distance / rate = ------------------- = (1/30) hr

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(1/30) hr converts to 2 minutes, since 1 hr = 60 minutes

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