4. The three different TV channels RU 1. ELTR and STV
have advertisement films every 15.35, and 45 minutes,
respectively.If the three TV channels have advertisement
films at 13:00' o clock, what will be the time, when they
have advertisement fins, again together?
A) 18:15 5) 19:00 B) 20:00 E) 16:15 A) 17:30​

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