The first

The first 300 km of a journey is covered in 10/3 hours, and the remaining journey is covered in 8/3 hours at 75 km/h. Find the average speed of the whole journey.

Correct answer:

v =  83.3333 km/h

Step-by-step explanation:

s1=300 km t1=10/3=3103.3333 h  t2=8/3=382.6667 h v2=75 km/h  s2=v2 t2=75 2.6667=200 km  s=s1+s2=300+200=500 km t=t1+t2=3.3333+2.6667=6 h  v=s/t=500/6=83.3333 km/h



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