1.

A man complete a journey in 10 hrs. He travels first half of the journey at the rate of 21 km/hr and second half at the rate of 24 km/hr. Find the total journey in km?

Answer»

224 km



Let the TOTAL distance be x km.

Then, [(1/2 x) / 21 + (1/2 x) / 24] = 10

15x = 168 * 20 => x = 224 km.



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