If a train travels at 60 km/h, it reaches its destination on time. If it travels at 50 km/h, it is late by 1 / 2 hour. What is the distance to be traveled?
Q1. If a train travels at 60 km/h, it reaches its destination on time. If it travels at 50 km/h, it is late by 1 / 2 hour. What is the distance to be traveled?
Answer: 150 km
Explanation: Let distance = d. Time taken at 60 km/h = d / 60, at 50 km/h = d / 50. d / 50 - d / 60 = 1 / 2. So, (6d - 5d) / 300 = 1 / 2, d = 150 km.