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 24 km/hr. Find the total journey in km.  Choose the correct choice from the following answers:
A) 220 km	B) 224 km	C) 230 km	D) 234 km	E) 255 km
(1/2)x/21 + (1/2)x/24 = 10   x/21 + x/24 = 20   15x=168x20   x=[168x20/15] = 224km   Answer is 224 km
<result>B</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 24 km/hr. Find the total journey in km.