Question

A 240m long train crosses aplatform having length of twice of the train's length in 4 sec. What is the speed of train

Answer 1

1. Question⇒   A 240m long train crosses aplatform having length of twice of the train's length in 4 sec. What is the speed of train.

Explanation:

• length of the train is 240m
• Platform length is 2 times the length of the train 2*240=480
• The train engine should start at the beginning of the platform and the last coach should end at the end of the platform
• Additionally the train has to move 240 m to cross the platform because the end coach should leave the platform
• 480+240=720
• Distance =720m
• Time=4 sec
• Velocity =distance /time
• =720/4
• =180m/sec
• 18o*18/5=64.8kmph
• the speed of the train is 648kmph