Rajesh goes to his office at the speed of 25 km/hr and returns to his home at the speed of 20 km/hr. If he takes total 9 hours, then what is the distance between his office and home?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 100 km
Let the distance between office and home be x km.
Speed = Distance/Time
y/25 + y/20 = 9
9y = 9/100
y = 100km.