if a train covered 60 km per hour next half 40 km per hour what will average speed of train.
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AVG=60+40/100=50km per hour
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Distance travelled in 1hr=60×1=60 km
Distance travelled in half hour= 40×1/2 =20 km
Total distance = 60+20=80 km
And total time taken = 1hr 30 min
Average speed =total distance ÷total time = 80÷3/2=80×2÷3 =160÷3=53.34 km/ hr
Therefore, the average speed of the train is 53.34 km/hr
Distance travelled in half hour= 40×1/2 =20 km
Total distance = 60+20=80 km
And total time taken = 1hr 30 min
Average speed =total distance ÷total time = 80÷3/2=80×2÷3 =160÷3=53.34 km/ hr
Therefore, the average speed of the train is 53.34 km/hr
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