engineering recuitment DRDO CEPTAM STA B Tier I (Sr. Technical Assistant) Mock Test 2022 Quantitative Aptitude Speed Time and Distance Problem on Trains
Train A takes 10 seconds to cross a pole and 20 seconds to cross a platform of 100m. Train B which moves in the opposite direction to train A is moving at a speed of 72 kmph. Calculate relative speed
1
136 kmph
2
144 kmph
3
90 kmph
4
108 kmph