Directions: Read the following statements and find out whether they are sufficient or not to answer the given question.
Find the length of train B.
Statement I: The length of train A is 300 m.
Statement II: The speed of train A is 54 km/hr and the speed of train B is 18 km/hr less than that of train A.
Statement III: They are moving in the opposite directions and the time to cross each other is 20 seconds.
1
Statement I alone is sufficient to answer the question.
2
Statement II alone is sufficient to answer the question.
3
Statement II and either statement I or statement III are required to answer.
4
Neither of the statements are sufficient to answer the question.
5
All the three statements are required to answer the question.