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1. |
A train runs for 3 h at the speed of 40 km/h and then for 41/2 h at the speed of 60 km/h. Thus, it covers 3/5th part of the whole distance. It wants to cover the remaining distance in 4 h, find the average speed of the train for remaining distance ? |
A. | 45 km/h |
B. | 35 km/h |
C. | 80 km/h |
D. | 65 km/h |
Answer» E. | |