A worker reaches his factory 15 minutes late if he walks at 4 km/h, and 10 minutes early if he walks at 6 km/h. Find the distance to his factory. MCQ with Answer and Explanation

Explanation:
Time taken to cross the platform alone = 21 - 9 = 12 seconds. Speed of train = 240 / 12 = 20 m/s. In km/h = 20 * (18/5) = 72 km/h.

Explanation:
Total distance = 130 + 270 = 400 meters. Speed = 400 / 20 = 20 m/s. In km/h = 20 * (18/5) = 72 km/h.

Explanation:
Distance = Speed * Time = 240 * 5 = 1200 km. New time = 1 hour 40 minutes = 5/3 hours. New speed = Distance / New Time = 1200 / (5/3) = 1200 * 3 / 5 = 720 km/h.