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A tourist covers half of his journey by train at 60 km/h, half of the remainder by bus at 30 km/h and the rest by cycle at 10 km/h. The average of the tourist in km/h during his entire journey is 

(A) 36 

(B) 30 

(C) 24 

(D) 18

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Best answer

Correct option is (C) 24 

Let the total distance covered be ‘D’

Now, average speed = D/Total time taken

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