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1. |
A man covers the journey from station A to station B at a uniform speed of 36 kmph and returns to A with a uniform speed of 45 kmph, his average speed for the whole journey is:? |
A. | 40 kmph |
B. | 40.5 kmph |
C. | 41 kmph |
D. | 42 kmph |
Answer» B. 40.5 kmph | |