Vehicle meeting

The distance between P and T is 89 km. At 8:00 AM, a lorry set off from T at a speed of 28 km/h, and at 8:45 AM, a passenger car set off against it from P at 52 km/h. When and at what distance will they compete?

Result

t = 9:36 h Wrong answer
s =  44.8 km

Step-by-step explanation:

s=89 km t1=8.00 h t2=8:45=8 hr 45 min =8+6045=8.75 hr=8.75 v1=28 km/h v2=52 km/h  Δt=t2t1=8.758=43=0.75 h  s1+s2=s  v1 x+v2 (xΔt)=s 28 x+52 (x0.75)=89  80x=128  x=80128=1.6  x=58=1.6  t=t1+x=8+1.6=9.6=9:36 h
s=v1 x=28 1.6=44.8 km



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