Question : Punit goes from his home to his relative's place at a speed of 45 km/h. While returning from the relative's place, due to traffic, it takes him an hour longer as he can only drive at the speed of 40 km/h. Find the distance (in km) of his relative's place from his home.
Option 1: 400
Option 2: 720
Option 3: 180
Option 4: 360
Correct Answer: 360
Solution :
Given,
Speed while going = 45 km/h
Speed while returning = 40 km/h
Time is taken while returning - Time taken while going = 1 hour
We know, Distance = Speed
Let's assume the distance between Punit's home and his relative's place to be '
Then, the time taken while going would be:
Time =
While returning, the time taken would be:
Time =
According to the question,
⇒
⇒
Hence, the correct answer is 360 km.
