A car covers 15 km, 20 km, 30 km and 12 km at speeds of 20 km/h, 30 km/h, 40 km/h and 30 km/h respectively. The average speed of the car for the total journey is:

A car covers 15 km, 20 km, 30 km and 12 km at speeds of 20 km/h, 30 km

1.	A car covers 15 km, 20 km, 30 km and 12 km at speeds of 20 km/h, 30 km/h, 40 km/h and 30 km/h respectively. The average speed of the car for the total journey is:
A.	88 km/h
B.	60 km/h
C.	30 km/h
D.	40 km/h
Answer» D. 40 km/h

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A car covers 15 km, 20 km, 30 km and 12 km at speeds of 20 km/h, 30 km/h, 40 km/h and 30 km/h respectively. The average speed of the car for the total journey is:

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