Sagot :
Cevap:
360 km yolumuz varsa bunun 1/3 ü 360/3=120 kilometre eder. Bu yolu saate 40 km ortalama süratle 120/40=3 saatte geri kalan 360-120=240 km yi ise saatte 60 km ortalama süratle 240/60=4 saatte gideriz. Toplam süre 3+4=7 saat bulunur.
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