A and B are two destinations. A car goes from A to B at an average speed of 64 km/hr and returns to A at a slower speed. If its average speed for the whole journey is 56 km/hr, it returned with speed:

A and B are two destinations. A car goes from A to B at an average speed of 64 km/hr and returns to A at a slower speed. If its average speed for the whole journey is 56 km/hr, it returned with speed:

1). 45.7 km/hr
2). 49.76 km/hr
3). 48 km/hr
4). 49.78 km/hr

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