state gov UP Police Head Operator (Radio Cadre) Mock Test Quantitative Aptitude Speed Time and Distance Relative Speed
Two trains 108 m and 112 m in length are running towards each other on the parallel lines at a speed of 45 km/hr and 54 km/hr respectively. To cross each other after they meet, it will take
1
10 sec
2
12 sec
3
9 sec
4
8 sec