Three buses

Three public transport buses depart together from the bus station in the morning. The first bus returns to the station after 18 minutes, the second after 12 minutes, and a third after 24 minutes. How long will again together at the station? Please express the result in hours and minutes.


m =  72 min
h = 1:12 hh:mm Wrong answer

Step-by-step explanation:

t1=18 min t2=12 min t3=24 min  18=232 12=223 24=233 LCM(18,12,24)=2332=72  m=LCM(t1,t2,t3)=LCM(18,12,24)=72 min
h=m/60=72/60=56=1.2=1:12 hh:mm

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