Answer :
The red and green lights will flash together again after 224 seconds or 3 minutes and 44 seconds.
To find out when the red light and green light will flash together again, we need to determine the least common multiple (LCM) of the two time intervals.
The LCM is the smallest multiple that is divisible by both numbers.
In this case, the LCM of 28 and 32 is 224 seconds.
Therefore, the lights will flash together again after 224 seconds or 3 minutes and 44 seconds.
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