<PRE><B>Question 839257</B>
Did you mean the speed of the car?


distance = speed * time


for the truck:
125 = 50 * t
t = 125/50 = 2.5 hours


for the car, because it takes 1/2 hours (= 0.5 hours) less than the truck, it needs 2 hours (2.5 - 0.5 = 2) to travel distance of 125 km.
So, the speed of the car:
125 = speed * 2
speed = 125/2 = 62.5 km/h

 
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