A car covers the first half of the distance between two places at a speed of \[40\,\,km\,\,{{h}^{-1}}\] and the second half at\[60\,\,km\,\,{{h}^{-1}}\]. Find the average speed of the car.

A car covers the first half of the distance between two places at a sp

1.	A car covers the first half of the distance between two places at a speed of \[40\,\,km\,\,{{h}^{-1}}\] and the second half at\[60\,\,km\,\,{{h}^{-1}}\]. Find the average speed of the car.
A.	\[100\,\,km\,\,{{h}^{-1}}\]
B.	\[50\,\,km\,\,{{h}^{-1}}\]
C.	\[48\,\,km\,\,{{h}^{-1}}\]
D.	\[52\,\,km\,\,{{h}^{-1}}\]
Answer» D. \[52\,\,km\,\,{{h}^{-1}}\]

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A car covers the first half of the distance between two places at a speed of \[40\,\,km\,\,{{h}^{-1}}\] and the second half at\[60\,\,km\,\,{{h}^{-1}}\]. Find the average speed of the car.

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