A car completed a journey of 5000 km. First 2000 km at 40 km/hr then next 1500 km at 60 km/hr and rest at 30 km/hr. Calculate the average speed of the journey?
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Average speed = Total distance / Total time
Here, Total time = 2000/40 + 1500/60 + 1500/30 = 50 + 25 + 50 = 125 hrs.
Avg. speed = 5000/125 = 40 km/hr.
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