Passenger car

A passenger car covers 1 km in 2/3 minutes, and a truck in 50 seconds longer. How much slower is the speed of the truck?

Correct answer:

v =  50 km/h

Step-by-step explanation:

s=1 km t1=2/3/60=9010.0111 h  t2=t1+50/3600=0.0111+50/3600=401=0.025 h  v1=s/t1=1/0.0111=90 km/h v2=s/t2=1/0.025=40 km/h  v=v1v2=9040=50 km/h



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