One car moving on a straight road covers one-third of the distance with 20 km/h and the rest with 60 km/h. The average speed is _______.
A. 40 km/h
B. 80km/h
C. 46\(\frac { 2 }{ 3 }\) km/hr
D. 36 km/h
Answer:D
One car moving on a straight road covers one-third of the distance with 20 km/h and the rest with 60 km/h. The average speed is _______.
A. 40 km/h B. 80km/h C. 46\(\frac { 2 }{ 3 }\) km/hr D. 36 km/h