A train covered k km at 40 kmph and another 2k km at 20 kmph. Find the 2 speed of the train in covering the entire 3k km ?
A) 28 kmph
B) 24 kmph
C) 26 kmph
D) 32 kmph
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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 ?
A) 28 kmphB) 24 kmphC) 26 kmphD) 32 kmph
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.
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 ?
A) 28 kmphB) 24 kmphC) 26 kmphD) 32 kmph
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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