The convoy

During a military exercise, the convoy left the camp at 5 hours at a speed of 40 km/h. Half an hour later, a motorcycle clutch was sent at a speed of 70 km/h. How long before the motorcycle clutch reaches the column?

Result

t = 0:40 h Wrong answer

Step-by-step explanation:

v1=40 km/h v2=70 km/h t2=1/2=12=0.5 h  s1=s2  v1 (t+t2)=v2 t 40 (t+0.5)=70 t  30t=20  t=230.666667=0.66667=0:40 h



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