Question

A 280 metre long train moving with a speed of 108 km/h crosses a platform in 12 second. A man crosses the same platform in 10 seconds. What is the speed of the man?

• A. 5m/s
• B. 8m/s
• C. 12m/s
• D. 9m/s

Answer 1

Answer:

B. 8m/s

Length of the platform is=x (x+280)/(108 * 5/18)= 12 (x+280)/30= 12 x+280 = 12 x 30 = 360 x=360-280 =80m Speed of man = Distance/time = 80/10 = 8 m/s