state gov TSPSC Group 4 Mock Test 2022-2023 Quantitative Aptitude Speed Time and Distance Problem on Trains
A train crosses a man with the speed of 81 km/hr in 20 sec. Find how much time it will take to cross a tunnel, if length of the tunnel is 50% more than the train.
1
30 sec
2
40 sec
3
2/3 minute
4
5/6 minute