a train covered k km at 40 kmph and another 2k km at 20 kmph find the | Examsbook

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Q: A train covered k km at 40 kmph and another 2k km at 20 kmph. Find the average speed of the train in covering the entire 3k km ?

1
28 kmph
2
24 kmph
3
26 kmph
4
32 kmph

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चर्चा

Answer : 2. "24 kmph"
Explanation :
Answer: B) 24 kmph Explanation: Total time taken = k/40 + 2k/20 hours = 5k/40 = k/8 hours Average speed = 3k/(k/8) = 24 kmph.

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