A man complete a journey in 10 hours. He travels first half of the journey at the rate of 21 km/hr and second half at the rate of 26 km/hr. Find the total journey in km.  Select the correct option.
A) 220 km B) 224 km C) 230 km D) 200 km E) 234 km
0.5x/10 + 0.5x/10 = 20   --&gt; x/10 + x/10 = 40   --&gt; 2x = 10x40   --&gt; x = (10x40)/2 =200 km.   Answer : 200 km.
<result>D</result>
A man complete a journey in 10 hours. He travels first half of the journey at the rate of 21 km/hr and second half at the rate of 26 km/hr. Find the total journey in km.