If a person walks at 14 km/hr instead of 10 km/hr, he would have walked 20 km more. The actual distance traveled by him is?  Choose the correct choice from the following:
A) 50 km	B) 16 km	C) 18 km	D) 29 km	E) 19 km

Rationale: "let the actual distance traveled be x km . then , x / 10 = ( x + 20 ) / 14 4 x - 200 = > x = 50 km . answer : a"
Answer: A