Question

i) A train covers a distance of 670 km in 6 h 5 min. If it covers the first 390 km of the journey at 90 km/h, find its speed for the rest of the journey. ​

Answer 1

Answer:

364 km/h

Step-by-step explanation:

Time taken to cover 390 km is 90 km/h 390km=4h 20min

Remaining distance =670−390=280 km

Remaining time =6h 5min−4h 20min=45 min=0.75 h

Speed =0.75280=364 km/h

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