A train 240 meters long passes a pole in 24 seconds. How long will it take to pass a platform 360 meters long?

Correct option is D

Given
Length of the train = 240 meters
Time taken to cross a pole = 24 seconds
Length of the platform = 360 meters

Formula Used
Speed = $$\frac{\text{Distance}}{\text{Time}}$$​​
When crossing a platform, Total Distance = Length of Train + Length of Platform
Time = $$\frac{\text{Total Distance}}{\text{Speed}}$$​​

Solution
Calculate the speed of the train as it crosses the pole (distance = length of train):
Speed = $$\frac{240}{24} =$$​10 m/s
Calculate the total distance to cross the platform:
Total Distance = 240 + 360 = 600 meters
Calculate the time required:
Time = $$\frac{600}{10}$$​​
Time = 60 seconds

Final Answer
So the correct answer is (d)