IBPS RRB Officer Scale 1 Exam 12 Sep 2020 Prelims Shift 1 Paper

Given below are two quantities named I and II. Based on the given information, you have to determine the relation between the two quantities. You should use the given data and your knowledge of Mathematics to choose among the possible answers.
Quantity I: A train takes 10 seconds to cross a 120 m long platform and takes 8 seconds to cross another 84 m long platform. What is the length of the train?
Quantity II: 50 m