state gov WBPSC Food SI Mock Test 2023 Quantitative Aptitude Speed Time and Distance Problem on Trains
A boy walking at 8 km/h noticed that a 280 m long train coming in the opposite direction crossed him in 12 seconds. The speed of the train is
1
84 km/h
2
76 km/h
3
86 km/h
4
90 km/h