A train 260 meters long passes a roadside signal box in 13 seconds. How long will it take to pass a bridge 440 meters long? MCQ with Answer and Explanation

Explanation:
Time for first part = 180 / 45 = 4 hours. Time for second part = 180 / 60 = 3 hours. Total time taken = 4 + 3 = 7 hours.

Explanation:
New speed = 3/4 of normal speed => New time = 4/3 of normal time. Difference = 1/3 of normal time = 10 minutes. Normal time = 10 * 3 = 30 minutes.

Explanation:
Total distance = 120 + 80 = 200 km. Time 1 = 120 / 30 = 4 hours. Time 2 = 80 / 40 = 2 hours. Total time = 6 hours. Average speed = 200 / 6 = 33.33 km/h.