Posted by **Katharine** on Wednesday, September 23, 2009 at 6:56pm.

At Eglinton subway station the 54 Lawrence bus leaves the station every 18 minutes. The 34 Eglinton Bus leaves every 30 minutes. The 28 Mt Pleasant Bus leaves the station every 11 minutes. Assuming the buses run 24 hours a day at what time interval do all three buses leave the station together?(Show all steps, write the answer in hours)