If a person walks at 14 km/hr instead of 10 km/hr, he would have walked 20 km more. The actual distance travelled by him is-
A 50 km
B 56 km
C 70 km
D 80 km
Solution
Correct Answer: Option A
Let the actual distance travelled be x km
Then, extra distance is x+20
According to questions,
x/10=(x+20)/14
⇒14x = 10x+200
⇒4x=200
⇒x=200/4
∴ x=50 km