Question

A train passes a station platform in 36 seconds and a man standing on the platform in 20 seconds. If the speed of the train is 54 km/h, then find the length of the platform

Answer 1

very simple when it's passes platform it's cross it's lenth+lenth of the platform.. I. e-36 sec but when it's cross the man or only it's lenth it's need 20 sec and here 54 km per hours
so in 1 hrs or 3600 sec for - 54 km
then can calculate 20 sec for?

then substract to get the ans