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?  Choose the correct choice from the following:  A) 176 km  B) 224 km  C) 168 km  D) 197 km  E) 258 km
Let the total distance be x km.   Then, [(1/2 x) / 21 + (1/2 x) / 24] = 10   15x = 168 * 20 =&gt; x   = 224 km.   Answer: 224 km
<result>B</result>
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?