Question 839257
If the speed of the truck is 50 km/h, what is the speed of the truck? 
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50 km/hr
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If you want the speed of the car:
The time for the truck is
t = d/r = 125/50 = 2.5 hours
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Time for the car is 1/2 hour less
= 2 hours
Speed of the car is
r = d/t = 125/2
= 62.5 km/hr