1.

 A train runs for five hours at a speed of 40 kmh-1 and for the next 20 hours at a speed of 30 kmh- 1 , covering 2/3 of the total distance. If the remaining distance is to be covered in 8 hours, what s

A. 50 kmh-1
B. 40 kmh-1
C. 30 kmh-1
D. 20 kmh-1
Answer» B. 40 kmh-1


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