RAJA 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 24 km/hr. Find the total journey in km. Pick:
A) 200 km
B) 250 km
C) 224 km
D) 255 km
E) 260 km
consider x -- &gt; (1/2)x/21 + (1/2)x/24 = 10   ==&gt; x/21+x/24 = 20   15x = 168 * 20   ==&gt; 224km   ANSWER 224 km
<result>C</result>
RAJA 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 24 km/hr. Find the total journey in km.