A can complete a journey in 1 hours. He travels first half of the journey at the rate of 21km/hr and second half at the rate of 24km/hr. Find the total journey in km? Select the correct option.
A) 120km	B) 150km	C) 200km	D) 224km	E) 287km
Let the total distance be xkm   x/2/21 + x/2/24 = 10   x/21 + x/24 = 20   15x = 168*20   x = 224km   Answer is 224km
<result>D</result>
A can complete a journey in 1 hours. He travels first half of the journey at the rate of 21km/hr and second half at the rate of 24km/hr. Find the total journey in km?