railway DFCCIL MTS 2025 Mock Test Series Quantitative Aptitude Speed Time and Distance Relative Speed
A taxi covers a certain distance in 20 min if it runs at a speed of 60 km/h. What must be the speed (in km/h) of the taxi in order to increase the time of the journey from 20 min to 30 min?
1
35
2
40
3
45
4
30