If a man covers the first 30 min of his journey at 9 km/h and the next 30 min of his journey at 12 km/h, then find his average speed?

If a man covers the first 30 min of his journey at 9 km/h and the n

1.	If a man covers the first 30 min of his journey at 9 km/h and the next 30 min of his journey at 12 km/h, then find his average speed?
A.	5 km/h
B.	11 km/h
C.	10 km/h
D.	10.5 km/h
Answer» E.

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If a man covers the first 30 min of his journey at 9 km/h and the next 30 min of his journey at 12 km/h, then find his average speed?

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