A man walks from his home to a park at 4 km/h and returns along the same route at 6 km/h. If the total time taken for the entire trip is 1 hour. Find the distance between his home and the park.
Show answer & explanation
Correct answer: B
Explanation
Speed while going = 4 km/h
Speed while returning = 6 km/h
Total time = 1 hour
Time = Distance / Speed
Let the distance be x km
Time taken while going = x / 4
Time taken while returning = x / 6
x/4 + x/6 = 1
3x/12 + 2x/12 = 1
5x/12 = 1
x = 12/5 = 2.4 km