Question

a train 240 m long passes a pole in 24 seconds. how long will it take to pass a platform 650m long?

Answer 1

$length \: of \: train(d) = 240 \\ time = 24 \\ speed \: of \: train = \frac{distance}{time} \\ s = \frac{240}{24} = 10ms \\ now \: length \: of \: platform = 650 \\ time \: taken \: to \: pass \: = \frac{650}{10} \\ t = 65secs$