If a person walks at 20 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 choices:
A) 20 km	B) 56 km	C) 60 km	D) 70 km	E) 80 km

Rationale: "let the actual distance travelled be x km . x / 10 = ( x + 20 ) / 14 20 x = 10 x + 200 10 x = 200 x = 20 km . answer : a"
Answer: A