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Mathematics, 19.05.2021 20:20 tassion3

Three lighthouses on three nearby islands flash their lights every evening. On one island, the light flashes every 45 seconds. The lighthouse on the second island has a light that flashes every 2 minutes. The third lighthouse flashes a light every 1 1/4 minute. Suppose all the lights flash together at 8:35 P. M. At what time will all three lights flash together again?

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