Q: Rajinder drives his car at a speed of 40 km/h to cover half of his total distance of his journey and then he increases his speed to 60 km/h. He completes his journey in 7 hours. What is the average speed of Rajinder in this journey?
A.
50 km/hr
B.
52 km/hr
C.
54 km/hr
D.
48 km/hr
Correct Answer:
Option D -
Explanations:
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