A person went to a place at a speed of 20 km/h and came back at a speed of 30 km/h. During this journey, if the time taken is 2 hours, determine the distance to that place.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 24 km
Given that
The speed of a person during one-way travel is 20 km/h and return speed is 30 km/h
Time taken for the whole journey is 2 hours
Distance of one-way travel = 2 × (20 × 30)/(20 + 30)
= 2 × 600/50
= 1200/50 = 24 km