La razón entre las velocidades de un avión y de un tren es 2 : 3 ?

<img src="https://tex.z-dn.net/?f=Hola~~%20%5C%5C%20%20%5C%5C%20Sea%20~avi%5Cacute%7Bo%7Dn~~----%5C%20%5Ctextgreater%20%5C%20a%20%5C%5C%20y~tren~~------%5C%20%5Ctextgreater%20%5C%20t%20%5C%5C%20%5C%5C%20%20~~~~~~~~~~~~%20%5Cbegin%7Bcases%7D%20raz%5Cacute%7Bo%7Dn%5Cbegin%7Bcases%7D%5Cfrac%7Ba%7D%7Bt%7D%20%3D%20%5Cfrac%7B2%7D%7B3%7D%20%5Cend%7Bcases%7D~~~---%5C%20%5Ctextgreater%20%5C%20despejando~%28t%29%20%5C%5C%20%20%20%5C%5C%20%20%5C%5C%20t%3D%20%5Cfrac%7B3a%7D%7B2%7D~~~--%5C%20%5Ctextgreater%20%5C%20donde~%5Cboxed%7Ba%3D600km%2Fh%20%7D%20%20%20%20%20%5Cend%7Bcases%7D%20%5C%5C%20Substituindo~%28a%29~tenemos%3A%20%5C%5C%20%20%5C%5C%20t%3D%20%5Cfrac%7B3%28600%29%7D%7B2%7D%20%20%5C%5C%20%20%5C%5C%20%5Cboxed%7B%5Cboxed%7Bt%3D900km%2Fh%7D%7D~~---%5C%20%5Ctextgreater%20%5C%20La~velocidad~del~tren" /> = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Espero haber ayudado!