A train 120 meters long crosses an electrical signal pole in 6 seconds. Find its speed in km/h. MCQ with Answer and Explanation

Explanation:
Speed of train = 60 * (5/18) = 50/3 m/s. Total distance covered in 18 seconds = (50/3) * 18 = 300 meters. Length of tunnel = 300 - 120 = 180 meters.

Explanation:
Speed of runner-up = 100 / 13 m/s. Distance covered by runner-up in 12 seconds = (100 / 13) * 12 = 1200 / 13 = 92.31 meters. Beat distance = 100 - 92.31 = 7.69 meters.

Explanation:
New speed = 5/6 of usual speed => New time = 6/5 of usual time. Difference = 1/5 of usual time = 12 minutes. Typical baseline time = 12 * 5 = 60 minutes.