If a person had walked at the speed of 15 km/h instead of 10 km/h, he would have walked 25 km more. Find the actual distance travelled by him.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 50 km
Let the actual distance (D) travelled by him at the speed of 10km/h in (T) hrs.
T = D/10....(1)
In same time (T) he would have walked 25 Km more if he walked at a speed of 15 km/h
Taking the value of T from (1)
Distance = Speed × Time
⇒ D + 25 = 15 × (D/10)
⇒ D + 25 = 15D/10
⇒ 10D + 250 = 15D
⇒ 5D = 250
⇒ D = 50