A car travels along a certain road at an average speed of 39 km/h,and returns along the same road at an average speed of 51 km/h.Calculate the average speed for the round trip, to within 0.1km/h

I know this should be easy, but I don't understand how to applythat average speed = total distance covered/tine interval. Thanks

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Reid WolffLv2

23 Nov 2019

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A car travels along a certain road at an average speed of 51 km/h and returns along the same road at an average speed of 57 km/h. Calculate the average speed for the round trip to within 0.1 km/h.

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I no this is alot of questions but im having trouble answeringthese! So please help me..

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