Truck and car

At 6h45min the truck started at a speed of 36 km/h. At 7h30m behind it a passenger car. Find the average speed of passenger car if it will catch truck 72 km away from the factory.

Result

v =  57.6 km/h

Solution:


72 = 36 t
72 = v (72/36-45/60)

36t = 72
225v = 12960

t = 2
v = 2885 = 57.6

Calculated by our linear equations calculator.







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