Together 40541

The first bus leaves every 10 minutes, the second every quarter of an hour, and the third every 18 minutes. At noon, all three lines left together from the station U Kachny. At what time did all the lines go again at the same time?


t = 13:30 Wrong answer

Step-by-step explanation:

a=10 min b=15 min c=18 min  10=25 15=35 18=232 LCM(10,15,18)=2325=90  s=LCM(a,b,c)=LCM(10,15,18)=90 min h=s h=s:60  h=90:60  h=1.5 h  t=12+h=12+1.5=227=13.5=13:30

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