 
 <translate> Speed of the train in metres/sec = 72000/3600 = 20
Distance travelled by train to cross the platform = 30 * 20 = 600 = Length of train + Length of platform
Distance travelled by train to cross the man = 19 * 20 = 380 = Length of train
Length of platform = 600 - 380 = 220
The final answer: (A). <hau> Saurin jirgin a cikin mita / sec = 72000/3600 = 20 Distance tafiya da jirgin kasa zuwa ƙetare dandali = 30 * 20 = 600 = Length na jirgin kasa + Length na dandali Distance tafiya da jirgin kasa zuwa ƙetare mutum = 19 * 20 = 380 = Length na jirgin kasa Tsawon dandamali = 600 - 380 = 220 Amsar ƙarshe: (A). 