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A can complete a journey in 19 hours. 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.


 A can complete a journey in 19 hours. 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.



[A] 220 km
[B] 224 km
[C] 230 km
[D] 234 km


ANS: B
Explanation:
Let the total distance be X km. Then,
=> 15x = 168 x 20 => x = [(168 x 20)/15] = 224 km.
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