A train covers a distance of 30 km at a speed of 40 km/h and another 30 km/h at the speed of 20 km/h. What is the average speed:

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A train covers a distance of 30 km at a speed of 40 km/h and another 30 km/h at the speed of 20 km/h. What is the average speed:

1.32

2.30

3.25

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Posted Date:-2021-09-30 05:39:55

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