Direction: Read the given information carefully and answer the following question.

There are two classes A and B. Both classes have three different types of streams, i.e., Arts, Commerce, and Science. In class A, there is a total of 600 students. Class B has 40% more students than class A. 20% of the students of class A are in Arts. One‐third of the total number of students of class A is in science. The remaining students of class A are in commerce. The total number of students in science in both the classes together is 480. The ratio of students of class B in commerce to the arts is 3 : 4.