Tram stop

The blue tram stops every 12 minutes, the red one 8 minutes. At 8 o'clock they left the stop together. How many times do they meet at a stop before 11 am?

Correct result:

n =  7

Solution:

t=(11−8)⋅ 60=180 min 12=22⋅3 8=23 LCM(12,8)=23⋅3=24  s=LCM(12,8)=24 min  n1=t/s=180/24=152=7.5  n=⌊n1⌋=⌊7.5⌋=7

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