A man can ride on motorcycle at 50 kmph upward road and 100 kmph downward road. He takes 12 hours to ride motorcycle uphill from lower point A to upper point B and back to A. What is the total distance traveled by him in 12 hours? He must return back to base point A in remaining time.  Choose the correct choice from the following answers:
A) 1000	B) 900	C) 800	D) 400	E) 1200
Upward distance traveled per hour - 50 km,   distance traveled after 8 hours = 400 km.   He remained with 4 hours travel downward, i.e. distance traveled in remaining 4 hours downward = 400 km   so total distance traveled from A to B and Back to point A = 400 km upward + 400 km downhill = 800 km   (Answer : 800)
<result>C</result>
A man can ride on motorcycle at 50 kmph upward road and 100 kmph downward road. He takes 12 hours to ride motorcycle uphill from lower point A to upper point B and back to A. What is the total distance traveled by him in 12 hours? He must return back to base point A in remaining time.