From the info you've provided it's impossible to guess whether the question should be about the cat or the jackal. I can find all the relevant dimensions needed, such as lengths of AP, OP and OB, and from that can get the ratio V_c:V_j (where V_c = velocity of cat and V_j = velocity of jackal). Finally, I can determine the distance prior to A that the train sounds its whistle, so would have no problem answering either question - the ratio of V_c:V_t or V_j:V_t