Different 6975

Three different bus lines, 80, 81, and 82, depart from the final station at 5h 20min. Line 80 departs every 30 minutes, line 81 every 20 minutes, and line 82 every 40 minutes. What time will they leave again?


t = 7:20 hh:mm Wrong answer

Step-by-step explanation:

t1=5+6020=605 60+6020=60300+6020=60300+20=60320=3165.3333 h  30=235 20=225 40=235 LCM(30,20,40)=2335=120  t2=LCM(30,20,40)=120 min  t=t1+t2/60=316+120/60=7.33333=7:20 hh:mm

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